Airworthiness Directives; MD Helicopters, LLC Helicopters
Published . Updated .
The FAA is adopting a new airworthiness directive (AD) for certain MD Helicopters, LLC (MDHI) Model 369D, 369E, 369F, 369FF, 369H, and 500N helicopters. This AD was prompted by a report of mechanical damage to the main transmission drive shaft coupling (coupling). This AD requires a one-time visual inspection of the couplings for cracks of the splines and, depending on the results, replacement of the couplings. The FAA is issuing this AD to address the unsafe condition on these products.
Directly affected
- No company is named in this report.
Indirectly affected
- SPR Spirit AeroSystems
Spirit builds Boeing fuselages, so a Boeing aircraft story reaches this supplier
- GE GE Aerospace-6.8%
GE Aerospace supplies and competes in commercial aircraft engines
- DAL Delta Air Lines-0.7%
Delta flies the 737, so a Boeing aircraft story reaches its fleet
- LMT Lockheed Martin+4.2%
Lockheed Martin is a defense and aerospace peer
- HWM Howmet Aerospace-8.4%
Howmet supplies parts used on commercial and defense aircraft
- RTX RTX
RTX competes in aircraft engines and defense systems
- UAL United Airlines+1.0%
United flies the 737, so a Boeing aircraft story reaches its fleet
- NOC Northrop Grumman+2.8%
Northrop Grumman is a defense and aerospace peer
- TDG TransDigm+1.6%
TransDigm supplies aircraft components to Boeing and the airlines
- AAL American Airlines-4.9%
American flies the 737, so a Boeing aircraft story reaches its fleet
Price reaction, T-5 to T+3
| Ticker | T-5 | T-3 | T-1 | T0 | T+1 | T+2 | T+3 |
|---|---|---|---|---|---|---|---|
| SPRNo price data for this ticker | — | — | — | — | — | — | — |
| GENo price data for this ticker | — | — | — | — | — | — | — |
| DALNo price data for this ticker | — | — | — | — | — | — | — |
| LMTNo price data for this ticker | — | — | — | — | — | — | — |
| HWMNo price data for this ticker | — | — | — | — | — | — | — |
| RTXNo price data for this ticker | — | — | — | — | — | — | — |
| UALNo price data for this ticker | — | — | — | — | — | — | — |
| NOCNo price data for this ticker | — | — | — | — | — | — | — |
| TDGNo price data for this ticker | — | — | — | — | — | — | — |
| AALNo price data for this ticker | — | — | — | — | — | — | — |
Closing-price change versus T-1, the last close before the story. T0 to T+3 fill in after each market close. Prices: Alpaca IEX.
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The FAA is adopting a new airworthiness directive (AD) for certain MD Helicopters, LLC (MDHI) Model 369D, 369E, 369F, 369FF, 369H, and 500N helicopters. This AD was prompted by a report of mechanical damage to the main transmission drive s…
Source: Federal Register
Trades by members of Congress and officials in the stocks in this story
- Rep. Maria Elvira Salazar sold General Electric (GE), worth $1,001 - $15,000 on 24 Sep 2026. That is 28 days before publication. Filed 7 Oct 2026. View the filing.
- Rep. Kevin Hern sold Lockheed Martin (LMT) (jointly held), worth $15,001 - $50,000 on 23 Sep 2026. That is 29 days before publication. Filed 13 Oct 2026. View the filing.
- Rep. Kevin Hern sold Lockheed Martin (LMT) (jointly held), worth $15,001 - $50,000 on 23 Sep 2026. That is 29 days before publication. Filed 13 Oct 2026. View the filing.
- Rep. Kevin Hern sold Lockheed Martin (LMT) (jointly held), worth $15,001 - $50,000 on 17 Sep 2026. That is 35 days before publication. Filed 13 Oct 2026. View the filing.
- Rep. Byron Donalds sold Howmet Aerospace (HWM) (held by a spouse), worth $1,001 - $15,000 on 11 Aug 2026. That is 72 days before publication. Filed 15 Sep 2026. View the filing.
- Rep. Byron Donalds sold Howmet Aerospace (HWM), worth $1,001 - $15,000 on 11 Aug 2026. That is 72 days before publication. Filed 15 Sep 2026. View the filing.
- Rep. Rohit Khanna sold United Airlines Holdings (UAL) (held by a spouse), worth $1,001 - $15,000 on 4 Sep 2026. That is 48 days before publication. Filed 7 Oct 2026. View the filing.
- Rep. Rohit Khanna bought United Airlines Holdings (UAL) (held by a spouse), worth $1,001 - $15,000 on 3 Aug 2026. That is 80 days before publication. Filed 4 Sep 2026. View the filing.
- Donald J Trump, an executive branch official, sold TransDigm Group (TDG), worth $15,001 - $50,000 on 28 Aug 2026. That is 55 days before publication. Filed 8 Oct 2026. View the filing.
- Rep. April McClain Delaney sold TransDigm Group (TDG) (held by a dependent child), worth $100,001 - $250,000 on 25 Aug 2026. That is 58 days before publication. Filed 9 Sep 2026. View the filing.
Public disclosure filings, not a recommendation. The filing link is the source document. News use of these reports still sits under 5 U.S.C. § 13107(c).
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25 out of 100
“Airworthiness Directives; MD Helicopters, LLC Helicopters” scores 25 out of 100. The score uses 2 sources.