AD 99-08-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | MD Helicopters, Inc. | 369E | Airworthiness Directives; McDonnell Douglas Helicopter Systems (MDHS) Model 369E, 369FF, 500N, and 600N Helicopters |
| aircraft | MD Helicopters, Inc. | 369FF | Airworthiness Directives; McDonnell Douglas Helicopter Systems (MDHS) Model 369E, 369FF, 500N, and 600N Helicopters |
| aircraft | MD Helicopters, Inc. | 500N | Airworthiness Directives; McDonnell Douglas Helicopter Systems (MDHS) Model 369E, 369FF, 500N, and 600N Helicopters |
| aircraft | MD Helicopters, Inc. | 600N | Airworthiness Directives; McDonnell Douglas Helicopter Systems (MDHS) Model 369E, 369FF, 500N, and 600N Helicopters |
Unsafe Condition
Improperly sized contact sockets in relay receptacles could create multiple unsafe conditions including undetected loss of auto-reignition function after engine flameout, failure of engine reignition, forced landing, inability to detect engine-out condition, and loss of main rotor speed control following FADEC loss.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect each relay receptacle contact socket for correct hole size, replace incorrectly-sized sockets with airworthy ones (part number 019-0075-002).
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Compliance Time
within the next 14 calendar days
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Affected Aircraft
McDonnell Douglas Helicopter Systems Model 369E (S/N 384E-0539E), 369FF (S/N 076FF-0128FF), 500N (up to LN085), and 600N (S/N RN002-RN039) helicopters.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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