Type Record · As of May 3, 2026
BOEING H-6
Rotorcraft · ROLLS-ROYC M250 SERIES
Registered
1
Year Range
2014–2014
NTSB Events
0
Airworthiness Directives
14
Aircraft Resources
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered BOEING H-6 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- AZ 100.0% 1
By Decade of Manufacture
- 2010s 100.0% 1
02 / NTSB Records
Events involving BOEING H-6 aircraft
No NTSB-recorded events match BOEING H-6 in the indexed corpus.
02b / NASA ASRS Reports
Near-miss reports involving BOEING H-6
NASA's voluntary, confidential reporting system surfaces what almost went wrong. 3 de-identified ASRS reports reference this airframe. Pilot-written narrative. ASRS reports are voluntary and not investigated — they represent the reporter's perspective and cannot infer prevalence.
- ACN 2084407 Altitude Deviations
Air carrier pilot reported descending too low on final approach. Flight crew corrected and landed uneventfully.
Boeing Company Undifferentiated or Other Model
- ACN 2053196 General Aviation Flight Training Reports
Flight Instructor with student reported a NMAC event during ATC assigned altitude with a large transport aircraft. The flight Instructor took evasive action to avoid a collision.
PA-23-250 Aztec
- ACN 2045396 Global Positioning (GPS) Reports
Captain reported GPS jamming in OPLR airspace at FL320 resulting in false GPWS indications and warnings.
Boeing Company Undifferentiated or Other Model
02c / Academic Research
Scholarly work mentioning BOEING H-6
Papers and reports across NASA, NTSB, FAA CAMI, AOPA ASI, Embry-Riddle, arXiv, and the broader academic graph that mention this airframe. Title or keyword match — drill into each for full abstract + author list + PDF link.
- NASA NTRS 2019 · Technical Memorandum (TM)
Fidelity assessment of a UH-60A simulation on the NASA Ames vertical motion simulator
Helicopter handling qualities research requires that a ground-based simulation be a high-fidelity representation of the actual helicopter, especially over the frequency range of the investigation.
- NASA NTRS 2019 · Conference Paper
Simulation System Fidelity Assessment at the Vertical Motion Simulator
Fidelity is a word that is often used but rarely understood when talking about groundbased simulation. Assessing the cueing fidelity of a ground based flight simulator requires a comparison to actual …
- NASA NTRS 2017 · Conference Paper
Assessment of simulation fidelity using measurements of piloting technique in flight
The U.S. Army and NASA joined together on a project to conduct a systematic investigation and validation of a ground based piloted simulation of the Army/Sikorsky UH-60A helicopter.
- Embry-Riddle Scholarly Commons 2009 · Journal article (JAAER)
Analysis of the Effectiveness of Army Helicopter Flight Training
The purpose of this study was to examine the effectiveness of the U.S. Army's new helicopter flight training program, Flight School XXI (FSXXI), in comparison to the previous (legacy) flight training …
Browse the full corpus — academia portal ↗
03 / Airworthiness Directives
FAA directives applicable to BOEING H-6
14 directive(s) on file. Showing the most recent 14.
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Mar 12, 2026
Airworthiness Directives; The Boeing Company Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes. This AD was prompted by discovery of a crack at one of the forward lower fastener holes following replacement of a cracked underwing longeron (UWL) fitting. This AD requires pe…
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Mar 4, 2025
Airworthiness Directives; The Boeing Company Airplanes
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This AD was prompted by two engine fan blade-out (FBO) events that resulted in the separation of engine inlet cowl and fan cowl parts from the airplane. In one event, f…
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Feb 10, 2025
Airworthiness Directives; The Boeing Company Airplanes
The FAA is superseding Airworthiness Directive (AD) 2020-03- 20, which applied to certain The Boeing Company Model MD-11, MD-11F, and 717-200 airplanes; all Model 737-8 and 737-9 airplanes; all Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes; certain Model 747-400 and 747-400F series airplanes; cer…
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Oct 8, 2024
Airworthiness Directives; The Boeing Company Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777-200, -200LR, -300, -300ER, and 777F series airplanes. This AD was prompted by a report indicating multiple findings of cracks in the fuselage skin common to the underwing longeron (UWL). This AD requires external or interna…
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Mar 28, 2024
Airworthiness Directives; The Boeing Company Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 777 airplanes. This proposed AD was prompted by a report indicating multiple findings of cracks in the fuselage skin common to the underwing longeron (UWL). This proposed AD would require external or internal (depending o…
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Mar 19, 2024
Airworthiness Directives; The Boeing Company Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777-200, 777-200LR, 777-300, 777- 300ER, and 777F series airplanes. This AD was prompted by reports of wing anti-ice (WAI) valve failure that can result in undetected structural damage to leading edge (LE) slat assemblies, and…
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Apr 13, 2023
Airworthiness Directives; Bombardier, Inc. Airplanes
The FAA is adopting a new airworthiness directive (AD) for all Bombardier, Inc., Model CL-600-1A11 (600), CL-600-2A12 (601), and CL- 600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. This AD was prompted by a determination that, due to a lack of flightcrew awareness, smoke hoods with a certain part number install…
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Feb 28, 2023
Airworthiness Directives; The Boeing Company Airplanes
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 777 airplanes. This AD was prompted by fuel system reviews conducted by the manufacturer. This AD requires, depending on the airplane configuration, installation of Teflon sleeves, cap sealing of fasteners, detailed inspections, an…
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Aug 2, 2022
Airworthiness Directives; The Boeing Company Airplanes
The FAA is superseding Airworthiness Directive (AD) 2019-23- 06, which applied to certain The Boeing Company Model 757-200, -200CB, and -300 series airplanes. AD 2019-23-06 required, depending on configuration, a general visual inspection for any previous repair, such as any reinforcing repair or local frame replaceme…
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Nov 17, 2021
Airworthiness Directives; The Boeing Company Airplanes
The FAA is revising a notice of proposed rulemaking (NPRM) that would have applied to certain The Boeing Company Model 757-200, - 200CB, and -300 series airplanes. This action revises the NPRM by including additional airplanes that are also subject to the identified unsafe condition. Since this change would impose an…
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Mar 24, 2021
Airworthiness Directives; The Boeing Company Airplanes
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 747 series airplanes and Model 767 series airplanes. This AD was prompted by a report of an un-commanded fuel transfer between the main and center fuel tanks. This AD prohibits operation of an airplane with any inoperative refuel v…
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Nov 20, 2020
Airworthiness Directives; The Boeing Company Airplanes
The FAA is superseding Airworthiness Directive (AD) 2018-23- 51, which applied to all The Boeing Company Model 737-8 and 737-9 (737 MAX) airplanes. AD 2018-23-51 required revising certificate limitations and operating procedures of the Airplane Flight Manual (AFM) to provide the flightcrew with runaway horizontal stab…
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Aug 6, 2020
Airworthiness Directives; The Boeing Company Airplanes
The FAA proposes to supersede Airworthiness Directive (AD) 2018-23-51, which applies to all The Boeing Company Model 737-8 and 737-9 (737 MAX) airplanes. Since AD 2018-23-51 was issued, the agency has determined that final corrective action is necessary to address the unsafe condition. This proposed AD would require i…
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Sep 27, 2004
Airworthiness Directives; Boeing Model 737-100, -200, -200C, -300, -400, and -500 Series Airplanes
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 737-100, -200, -200C, -300, -400, and -500 series airplanes, that requires repetitive inspections for corrosion and cracking of the pivot hinge pins of the horizontal stabilizer, certain follow-on inspections, and replacement…
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for BOEING H-6
Advisory Circulars
ACs whose subject explicitly mentions BOEING or H-6.
Recent Federal Register activity
Latest rulemakings touching general operating rules (Part 91) and maintenance rules (Part 43).
- 2026-04-17 Settlement Policy for Small Unmanned Aircraft System (UAS) Cases FR ↗
- 2026-02-10 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period; Denial of Extension FR ↗
- 2026-02-02 25-Hour Cockpit Voice Recorder (CVR) Requirement, New Aircraft Production FR ↗
- 2026-01-28 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period FR ↗
- 2026-01-07 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
05 / Aircraft of this type
All 1 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.
| N-number | St | Year | NTSB | FAA |
|---|---|---|---|---|
| N306HX | AZ | 2014 | · | 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
- 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 →