AIR TRACTOR INC AT-504

01 /  Distribution

Where the fleet lives and was built

Counts of currently-registered AIR TRACTOR INC AT-504 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.

02 /  NTSB Records

Events involving AIR TRACTOR INC AT-504 aircraft

3 event(s) on file. Showing the most recent 3.

• Oct 9, 2024

  N149SH

  Gizan, Other Foreign Serious

  NTSB Docket →

• Jun 11, 2009

  N149SH

  Morristown, Arizona Fatal

  NTSB Docket →

• Nov 20, 1965

  N3081Y

  SANTA FE, New Mexico Fatal

  NTSB Docket →

03 /  Airworthiness Directives

FAA directives applicable to AIR TRACTOR INC AT-504

2 directive(s) on file. Showing the most recent 2.

• Mar 25, 2021

  Airworthiness Directives; Air Tractor, Inc., Airplanes

  The FAA is adopting a new airworthiness directive (AD) for all Air Tractor, Inc., (Air Tractor) Models AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-401B, AT-402, AT-402A, AT-402B, AT-501, AT-502, AT-502A, AT-502B, AT-503, AT-503A, AT-504, AT-602, AT- 802, and AT-802A airplanes. This AD was prom…

  Atlas AD → Federal Register ↗

• Jul 28, 2020

  Airworthiness Directives; Air Tractor, Inc. Airplanes

  The FAA proposes to adopt a new airworthiness directive (AD) for all Air Tractor, Inc. (Air Tractor) Models AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-401B, AT-402, AT-402A, AT- 402B, AT-501, AT-502, AT-502A, AT-502B, AT-503, AT-503A, AT-504, AT- 602, AT-802, and AT-802A airplanes. This propo…

  Atlas AD → Federal Register ↗

07 /  PMA replacement parts

FAA-approved replacement parts for AIR TRACTOR INC AT-504

4 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.

• 7246-20AT#https://drs.faa.gov/browse/excelExternalWindow/7A23984EC8B7615E862584AB0076CD65.0001##

  Valve-Regulated Lead-Acid Battery

  Teledyne Battery Products replaces G-246 (G-246AT)

  PMA holder →

• 7246-20#https://drs.faa.gov/browse/excelExternalWindow/8ADF30E4E4E81939862584AB0076CD7E.0001##

  Valve-Regulated Lead-Acid Battery

  Teledyne Battery Products replaces G-246 (G-246AT)

  PMA holder →

• 510297-203-XXXX#https://drs.faa.gov/browse/excelExternalWindow/0D76D82C2E41132786257A7E00698A3D.0001##

  Installation Kit Specification

  AmSafe Inc replaces Modification Part

  PMA holder →

• 10031#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID162698932920250417182850.0001##

  WINDOW FRAME (INSIDE)(285/400 HOPPER)

  Texas Transland LLC replaces Modification Part

  PMA holder →

09 /  Equivalent Level of Safety findings

ELOS findings issued for AIR TRACTOR INC AT-504

1 ELOS finding on file. The FAA issues an ELOS when an applicant proposes an alternative means that achieves the same safety outcome as a literal regulation — a standing record of which certification deviations the agency has approved for this model series.

• ACE-09-02

  Emergency Landing Dynamic Conditions

  § 23.562

  02/11/2009 →

04 /  Regulations watching this type

Advisory Circulars and Federal Register activity for AIR TRACTOR INC AT-504

05 /  Aircraft of this type

All 9 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.

05 /  Sources & Methodology

Every count traces back to a primary US-government source

• FAA Aircraft Registry →

  Refreshed Apr 27, 2026

  Available

• NTSB CAROL →

  Refreshed Apr 27, 2026

  Available

• Federal Register (FAA Airworthiness Directives) →

  Refreshed Apr 27, 2026

  Available

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