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Type Record · As of May 3, 2026

AGUSTAWESTLAND PHILADELPHIA AW139

Rotorcraft

Registered

114

Year Range

2011–2026

NTSB Events

17

Airworthiness Directives

28

01 /  Distribution

Where the fleet lives and was built

Counts of currently-registered AGUSTAWESTLAND PHILADELPHIA AW139 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.

By State (top 10)

  • PA 34.3% 37
  • UT 14.8% 16
  • LA 13.9% 15
  • FL 10.2% 11
  • MD 8.3% 9
  • MS 4.6% 5
  • NJ 2.8% 3
  • NV 1.9% 2
  • CA 1.9% 2
  • DE 1.9% 2

+6 more states

By Decade of Manufacture

  • 2010s 43.0% 49
  • 2020s 28.9% 33
  • Unknown 28.1% 32

02 /  NTSB Records

Events involving AGUSTAWESTLAND PHILADELPHIA AW139 aircraft

17 event(s) on file. Showing the most recent 17.

03 /  Airworthiness Directives

FAA directives applicable to AGUSTAWESTLAND PHILADELPHIA AW139

28 directive(s) on file. Showing the most recent 25 · 3 more in the Federal Register.

  • Dec 27, 2022

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is superseding Airworthiness Directive (AD) 2021-20-10 for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. AD 2021- 20-10 required removing from service a certain part-numbered main gearbox (MGB) spherical bearing lock nut (lock nut) that is installed on certain part-numbered MGBs and replacing it w…

  • Nov 10, 2022

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA proposes to adopt a new airworthiness directive (AD) for all Leonardo S.p.a. Model AB139 and AW139 helicopters. This proposed AD was prompted by a report of a damaged tail rotor duplex bearing (TRDB). This proposed AD would require repetitively inspecting certain TRDBs and depending on the results, replacing t…

  • Nov 2, 2022

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This AD was prompted by a report of smoke and fire in the cockpit. This AD requires inspecting the forward cabin roof ceiling harnesses and installation, as specified in a European Union Aviation Safet…

  • Jun 22, 2022

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This AD was prompted by a large crack detected on the tail gearbox (TGB) fitting during a scheduled inspection and the determination that certain TGB fittings are required to be inspected by the use of…

  • Apr 20, 2022

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA proposes to supersede Airworthiness Directive (AD) 2021-20-10, which applies to certain Leonardo S.p.a. Model AB139 and AW139 helicopters. AD 2021-20-10 requires removing from service a certain part-numbered main gearbox (MGB) spherical bearing lock nut (lock nut) that is installed on certain part-numbered MGB…

  • Apr 4, 2022

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is superseding Airworthiness Directive (AD) 2020-23- 07, which applied to certain Leonardo S.p.a. Model AB139 and AW139 helicopters. AD 2020-23-07 required removing certain life raft reservoirs (reservoirs) from service, inspecting the reservoirs and actuator cables, and depending on the inspection results, re…

  • Mar 21, 2022

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This proposed AD was prompted by a large crack detected on the tail gearbox (TGB) fitting during a scheduled inspection and the determination that certain TGB fittings are required to be inspecte…

  • Jan 12, 2022

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA proposes to supersede Airworthiness Directive (AD) 2020-23-07, which applies to certain Leonardo S.p.a. Model AB139 and AW139 helicopters. AD 2020-23-07 requires removing certain life raft reservoirs (reservoirs) from service, inspecting the reservoirs and actuator cables, and depending on the inspection resul…

  • Dec 14, 2021

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This AD was prompted by reports of failed main rotor (MR) dampers. This AD requires various inspections of certain MR dampers, as specified in a European Aviation Safety Agency (now European Union Avia…

  • Nov 2, 2021

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This AD was prompted by the determination that the requirement to accomplish a rated load check (RTC) on certain hoist assemblies may have been inadvertently left out of some aircraft maintenance publi…

  • Oct 18, 2021

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This AD was prompted by a report of several occurrences of a cracked main gearbox (MGB) spherical bearing lock nut (lock nut). This AD requires removing from service a certain part-numbered MGB lock nu…

  • Sep 27, 2021

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This AD was prompted by a report that, during a post-flight inspection of an in- service helicopter, a tail rotor slider assembly was found fractured, and the bushing and the actuator rod in the tail r…

  • Sep 14, 2021

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is revising an earlier proposal for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This action revises the notice of proposed rulemaking (NPRM) by expanding the required actions. This proposed AD would require various inspections of certain main rotor (MR) dampers, as specified in a European Aviati…

  • Jul 26, 2021

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a. (Leonardo) Model AB139 and AW139 helicopters. This proposed AD was prompted by a report of several occurrences of a cracked main gearbox (MGB) spherical bearing lock nut (lock nut). This proposed AD would require removing from ser…

  • Jul 23, 2021

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This AD was prompted by two events of uncommanded emergency flotation system (EFS) deployment during flight. This AD requires replacing certain part- numbered EFS control panels and prohibits installin…

  • Jun 29, 2021

    Airworthiness Directives; Leonardo S.p.a. (Type Certificates Previously Held by Agusta S.p.A. and AgustaWestland S.p.A.) Helicopters

    The FAA is adopting a new airworthiness directive (AD) for Leonardo S.p.a. (Type Certificate previously held by Agusta S.p.A.) Model AB139 and AW139 helicopters and Leonardo S.p.a. (Type Certificate previously held by AgustaWestland S.p.A.) Model AW189 helicopters. This AD was prompted by reports of missing lock wire…

  • Jun 25, 2021

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139, AW139, and AW189 helicopters. This AD was prompted by a report of the in-flight failure of one of the three stainless steel external rings bonded to the main rotor swashplate boot. This AD requires repetitive inspections of…

  • Jun 24, 2021

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and Model AW139 helicopters. This proposed AD was prompted by a report that, during a post-flight inspection of an in-service helicopter, a tail rotor slider assembly was found fractured, and the bushing and the actuat…

  • May 25, 2021

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a. Model AB139 and AW139 helicopters. This proposed AD was prompted by two events of uncommanded emergency flotation system (EFS) deployment during flight. This proposed AD would require replacing certain part-numbered EFS control pa…

  • Apr 19, 2021

    Airworthiness Directives; Leonardo S.p.a. (Type Certificates Previously Held by Agusta S.p.A. and AgustaWestland S.p.A.) Helicopters

    The FAA proposes to adopt a new airworthiness directive (AD) for Leonardo S.p.a. (Type Certificate previously held by Agusta S.p.A.) Model AB139 and AW139 helicopters and Leonardo S.p.a. (Type Certificate previously held by AgustaWestland S.p.A.) Model AW189 helicopters. This proposed AD was prompted by reports of mis…

  • Feb 25, 2021

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. (Leonardo) Model AB139 and AW139 helicopters. This AD requires removing certain engine mounting rods from service and prohibits their installation on any helicopter. This AD was prompted by a report of non-conforming engine mounting rod…

  • Nov 19, 2020

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is adopting a new airworthiness directive for all Leonardo S.p.a. Model AB139 and AW139 helicopters. This AD requires removing certain emergency life raft (raft) reservoirs (reservoirs) from service, inspecting the reservoirs and raft actuator cables (actuator cables), and depending on the inspection results,…

  • Sep 10, 2020

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA is adopting a new airworthiness directive (AD) for Leonardo S.p.a. (Leonardo) Model AB139 and AW139 helicopters. This AD requires removing certain main gearbox (MGB) input modules from service. This AD was prompted by the discovery that a batch of duplex bearings, which are installed on the MGB input modules,…

  • Jul 9, 2020

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.a. (Leonardo) Model AB139 and AW139 helicopters. This proposed AD would require removing certain engine mounting rods from service and prohibit their installation on any helicopter. This proposed AD was prompted by a report of non-co…

  • Jun 8, 2020

    Airworthiness Directives; Leonardo S.p.a. Helicopters

    The FAA proposes to adopt a new airworthiness directive (AD) for Leonardo S.p.a. (Leonardo) Model AB139 and AW139 helicopters. This proposed AD would require removing certain main gearbox (MGB) input modules from service. This proposed AD was prompted by the discovery that a batch of duplex bearings, which are install…

07 /  PMA replacement parts

FAA-approved replacement parts for AGUSTAWESTLAND PHILADELPHIA AW139

33 parts on file from the FAA Parts Manufacturer Approval database. Each is a non-OEM part the FAA has authorized for use as a replacement on this aircraft type.

  • 1133625-102#https://drs.faa.gov/browse/excelExternalWindow/F80785435249CFA186257EE4006C7682.0001##

    Kit Refrigerant Tubes

    Enviro Systems Inc replaces 3G2150V10931

    PMA holder →
  • 1300160-7#https://drs.faa.gov/browse/excelExternalWindow/B14D89D2D205EC1886257EE4006C7687.0001##

    Cockpit Control Panel HTR

    Enviro Systems Inc replaces 3G2141V11151

    PMA holder →
  • 1300610-53#https://drs.faa.gov/browse/excelExternalWindow/9FEC803CB814326286257EE4006C7680.0001##

    Controller, ECS

    Enviro Systems Inc replaces 3G2141V11053

    PMA holder →
  • 1133690-1#https://drs.faa.gov/browse/excelExternalWindow/492B0C9A0DEC5F9486257EE4006C7685.0001##

    Panel Assy R134A Service - AW139

    Enviro Systems Inc replaces 3G2150V10931

    PMA holder →
  • 1133625-101#https://drs.faa.gov/browse/excelExternalWindow/224D7B27CC9052C386257EE4006C7681.0001##

    Kit Refrigerant Tubes

    Enviro Systems Inc replaces 3G2150V10931

    PMA holder →
  • 1133680-3#https://drs.faa.gov/browse/excelExternalWindow/99A74CF8DC49B4FD86257EE4006C7686.0001##

    VCS Condenser Pack

    Enviro Systems Inc replaces 3G2150V10253

    PMA holder →
  • 1300770-1#https://drs.faa.gov/browse/excelExternalWindow/087A91CF03DD18E886257EE4006C767E.0001##

    Muffler, Assembly Acoustic

    Enviro Systems Inc replaces 3G2141V10551

    PMA holder →
  • 1300010-3#https://drs.faa.gov/browse/excelExternalWindow/21E8D8485B6EE60286257EE4006C7684.0001##

    RH CKPT Fresh Air Valve

    Enviro Systems Inc replaces 3G2141V12251

    PMA holder →
  • 1300830-1#https://drs.faa.gov/browse/excelExternalWindow/F6B091B375FDD2F386257EE4006C767D.0001##

    Valve, Ejector-Heating

    Enviro Systems Inc replaces 3G2141V10451

    PMA holder →
  • 1300440-9#https://drs.faa.gov/browse/excelExternalWindow/6F803D7004AA385F86257EE4006C767F.0001##

    Zone Temperature Sensor

    Enviro Systems Inc replaces 3G2141V10751

    PMA holder →
  • 1270570-2#https://drs.faa.gov/browse/excelExternalWindow/B44230BE7FD5117586257EE4006C7683.0001##

    Fan Axial Cabin Evaporator, 5.75 Inch

    Enviro Systems Inc replaces 3G2141V10952

    PMA holder →
  • 1330500-2#https://drs.faa.gov/browse/excelExternalWindow/0C2A3250A3465A5B86257EE4006C767B.0001##

    Shut Off Valve

    Enviro Systems Inc replaces 3G2141V10151

    PMA holder →
  • 1300160-3#https://drs.faa.gov/browse/excelExternalWindow/0DCBF7DF59CA8FA986257EE4006C767A.0001##

    Cockpit Control Panel ECS

    Enviro Systems Inc replaces 3G2150V10651

    PMA holder →
  • 1133420-1#https://drs.faa.gov/browse/excelExternalWindow/0AEE7AFE2519FADA86257EE4006C7679.0001##

    Cabin Evaporator Module

    Enviro Systems Inc replaces 3G2150V10551

    PMA holder →
  • 1133740-1#https://drs.faa.gov/browse/excelExternalWindow/21FBAA4E977C9D2B86257EE4006C7676.0001##

    ECS Compressor

    Enviro Systems Inc replaces 3G2150V10151

    PMA holder →
  • 1300010-1#https://drs.faa.gov/browse/excelExternalWindow/DE485D401895DF8A86257EE4006C767C.0001##

    Cockpit Fresh Air Valve

    Enviro Systems Inc replaces 3G2141V10251

    PMA holder →
  • 1270410-2#https://drs.faa.gov/browse/excelExternalWindow/53824285DEC0A00E86257EE4006C7673.0001##

    Fan, Axial, Cockpit Evaporator, 4 Inch

    Enviro Systems Inc replaces 3G2141V10852

    PMA holder →
  • 1133430-1#https://drs.faa.gov/browse/excelExternalWindow/AEC49A9F81EFAFE586257EE4006C7678.0001##

    Cockpit Evaporator LH

    Enviro Systems Inc replaces 3G2150V10451

    PMA holder →
  • 1133440-1#https://drs.faa.gov/browse/excelExternalWindow/5B8155D4B5D1898C86257EE4006C7677.0001##

    Cockpit Evaporator RH

    Enviro Systems Inc replaces 3G2150V10351

    PMA holder →
  • 1300020-1#https://drs.faa.gov/browse/excelExternalWindow/579B6F44379C78C186257EE4006C7671.0001##

    Cabin Fresh Air Valve, Heat Only

    Enviro Systems Inc replaces 3G2141V10351

    PMA holder →
  • 1300030-1#https://drs.faa.gov/browse/excelExternalWindow/E39C839FBFE38AAD86257EE4006C7674.0001##

    Cabin Fresh Air Valve, VCS

    Enviro Systems Inc replaces 3G2150V10751

    PMA holder →
  • 6751-99-01#https://drs.faa.gov/browse/excelExternalWindow/03CB5577D07BE09F86257EBA0065353F.0001##

    BOM, KIT, AW139

    Aero Dynamix Inc replaces Modification Part

    PMA holder →
  • 6751-99-01#https://drs.faa.gov/browse/excelExternalWindow/AB3D8CD2269F7DBB86257E69006F3739.0001##

    BOM, KIT, AW139

    Aero Dynamix Inc replaces Modification Part

    PMA holder →
  • 6751-99-01#https://drs.faa.gov/browse/excelExternalWindow/636CC1B4F998A97586257DE80069BF62.0001##

    BOM, KIT, AW139

    Aero Dynamix Inc replaces Modification Part

    PMA holder →
  • 6751-99-01#https://drs.faa.gov/browse/excelExternalWindow/DC412338D2DEA25686257D960065F818.0001##

    BOM, KIT, AW139

    Aero Dynamix Inc replaces Modification Part

    PMA holder →
  • 6751-99-01#https://drs.faa.gov/browse/excelExternalWindow/9C040B9B8AE2885686257C350059CC2E.0001##

    BOM, KIT, AW139

    Aero Dynamix Inc replaces Modification Part

    PMA holder →
  • KF226-4001#https://drs.faa.gov/browse/excelExternalWindow/C630912095FF97A086257CC1004970F8.0001##

    Special Ring Upper

    NHBB Astro Division replaces AgustaWestland P/N 3G6230V00951

    PMA holder →
  • K226-4001#https://drs.faa.gov/browse/excelExternalWindow/FD1170887DD34C5B86257CC1004970B3.0001##

    Special Ring Lower

    NHBB Astro Division replaces AgustaWestland P/N 3G6230V00851

    PMA holder →
  • AA22100#https://drs.faa.gov/browse/excelExternalWindow/BC33C0CF5205BC5186257C2F006DAC37.0001##

    Main Rotor De-Ice

    Semco Instruments Inc replaces 4G3060V01051

    PMA holder →
  • 19E319-2A#https://drs.faa.gov/browse/excelExternalWindow/C5DB7EEEED74195A86257B94006D8410.0001##

    Shaft Assembly, Input

    Goodrich Corporation replaces Agusta P/N 3G6310V00152

    PMA holder →
  • 19E344-1A#https://drs.faa.gov/browse/excelExternalWindow/8E74CE46F679EE3886257B94006D8415.0001##

    Coupling Assembly, AW139 Tail

    Goodrich Corporation replaces Agusta P/N 4G6510V00152

    PMA holder →
  • 87349#https://drs.faa.gov/browse/excelExternalWindow/9FBBDD593859A0DB86257BB70062C15C.0001##

    TC-978 Control Head

    FreeFlight Systems replaces Modification Part

    PMA holder →
  • 6751-99-01#https://drs.faa.gov/browse/excelExternalWindow/29C4AC3D45A3F9BB86257B83006F7265.0001##

    BOM, KIT, AW139

    Aero Dynamix Inc replaces Modification Part

    PMA holder →

05 /  Aircraft of this type

All 114 registered N-numbers

Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged have NTSB events on file. Tails seeded with full TallyAero pages link directly.

114 of 114
N-number St Year NTSB FAA
N115TG PA · Look up ↗
N116TG PA Look up ↗
N119MW LA 2012 · Look up ↗
N1392C 2025 · Look up ↗
N139AK UT 2019 · Look up ↗
N139B PA · Look up ↗
N139DE 2013 · Look up ↗
N139TP UT 2016 · Look up ↗
N149PH LA 2012 · Look up ↗
N151PH LA 2012 · Look up ↗
N152PH LA 2012 · Look up ↗
N153PH LA 2012 · Look up ↗
N15460 FL 2012 Look up ↗
N159RB LA 2012 · Look up ↗
N181J RI 2018 Look up ↗
N221NF PA · Look up ↗
N221VF PA · Look up ↗
N223KR UT 2013 · Look up ↗
N225EP PA · Look up ↗
N2314 NV 2024 · Look up ↗
N2415 NV 2024 Look up ↗
N276HS UT 2016 · Look up ↗
N27RT 2022 Look up ↗
N282EF PA · Look up ↗
N283EF PA · Look up ↗
N29RT 2023 Look up ↗
N301FD CA 2019 · Look up ↗
N304FD CA 2017 Look up ↗
N308GC PA · Look up ↗
N319SB FL 2023 · Look up ↗
N328SH LA 2012 · Look up ↗
N339BB UT 2025 · Look up ↗
N363TR UT 2025 · Look up ↗
N379EF PA · Look up ↗
N381MD MD 2012 · Look up ↗
N382MD MD 2012 · Look up ↗
N383MD MD 2012 · Look up ↗
N384MD MD 2013 · Look up ↗
N385MD MD 2013 · Look up ↗
N386MD MD 2013 · Look up ↗
N387MD MD 2013 · Look up ↗
N388MD MD 2013 · Look up ↗
N389MD MD 2013 · Look up ↗
N39EQ NY 2025 · Look up ↗
N39WE UT 2019 · Look up ↗
N3NJ NJ Look up ↗
N42EE UT 2023 · Look up ↗
N436Q MT 2014 · Look up ↗
N438H UT 2024 · Look up ↗
N439H UT 2024 · Look up ↗
N467CP 2020 · Look up ↗
N4FN UT 2022 Look up ↗
N501VB PA · Look up ↗
N503SH UT 2016 · Look up ↗
N50HR FL 2017 · Look up ↗
N524JD LA 2012 · Look up ↗
N531JR PA 2024 · Look up ↗
N539JR PA 2025 · Look up ↗
N545BG LA 2015 · Look up ↗
N553RD LA 2014 · Look up ↗
N562JR PA 2025 · Look up ↗
N563JR PA 2025 · Look up ↗
N564JR PA · Look up ↗
N565JR PA 2026 · Look up ↗
N566JR PA 2026 · Look up ↗
N567JR PA · Look up ↗
N605KG DE 2015 · Look up ↗
N614EP PA · Look up ↗
N638MF NJ 2014 · Look up ↗
N639BG LA 2013 · Look up ↗
N639CF MS 2025 · Look up ↗
N639GG MS 2012 · Look up ↗
N639JK MS 2025 · Look up ↗
N639MC MS 2012 · Look up ↗
N639NA MS 2013 Look up ↗
N675WB CT 2015 · Look up ↗
N690BB PA · Look up ↗
N696BB DE 2020 · Look up ↗
N700J NJ 2016 · Look up ↗
N706EP PA · Look up ↗
N709EP PA · Look up ↗
N723EP PA Look up ↗
N726MD LA 2013 · Look up ↗
N730VM LA 2014 · Look up ↗
N739BG LA 2013 · Look up ↗
N811TA LA 2011 Look up ↗
N83ML IN 2013 · Look up ↗
N855AH UT 2018 · Look up ↗
N855JR PA · Look up ↗
N856AH UT 2019 · Look up ↗
N856JR PA · Look up ↗
N857AH UT 2019 · Look up ↗
N857JR PA · Look up ↗
N858JR PA · Look up ↗
N859AH UT 2019 · Look up ↗
N859JR PA · Look up ↗
N860JR PA · Look up ↗
N861JR PA · Look up ↗
N862JR PA · Look up ↗
N863JR PA · Look up ↗
N864JR PA · Look up ↗
N865JR PA · Look up ↗
N866JR PA · Look up ↗
N8CP 2025 · Look up ↗
N911AR FL 2020 · Look up ↗
N911FD FL 2020 · Look up ↗
N911FK FL 2025 Look up ↗
N911FR FL 2020 · Look up ↗
N911LK FL 2025 · Look up ↗
N911RA FL 2020 Look up ↗
N911RR FL 2025 Look up ↗
N926EP PA · Look up ↗
N965LA MN 2023 · Look up ↗
N996LF FL 2026 · Look up ↗

Source — FAA Aircraft Registry · click "Look up" to query the live registry record (owner, address, last airworthiness)

05 /  Sources & Methodology

Every count traces back to a primary US-government source

We render counts and lists as the agency publishes them. Read the methodology →