AD 99-20-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | MD Helicopters, Inc. | 369D | Airworthiness Directives; MD Helicopters Inc. Model 369D, 369E, 369FF, 500N, and 600N Helicopters |
| aircraft | MD Helicopters, Inc. | 369E | Airworthiness Directives; MD Helicopters Inc. Model 369D, 369E, 369FF, 500N, and 600N Helicopters |
| aircraft | MD Helicopters, Inc. | 369FF | Airworthiness Directives; MD Helicopters Inc. Model 369D, 369E, 369FF, 500N, and 600N Helicopters |
| aircraft | MD Helicopters, Inc. | 500N | Airworthiness Directives; MD Helicopters Inc. Model 369D, 369E, 369FF, 500N, and 600N Helicopters |
| aircraft | MD Helicopters, Inc. | 600N | Airworthiness Directives; MD Helicopters Inc. Model 369D, 369E, 369FF, 500N, and 600N Helicopters |
Unsafe Condition
Failure of the oil cooler blower bracket (P/N 369F5190-1) could result in loss of cooling of engine oil and transmission oil, leading to a subsequent forced landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the oil cooler blower bracket P/N 369F5190-1 with an airworthy bracket P/N 369F5194-1 within 100 hours time-in-service. Alternative methods of compliance may be approved by the Manager, Los Angeles Aircraft Certification Office.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 100 hours time-in-service
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
MD Helicopters Inc. Models 369D, 369E, 369FF, 500N, and 600N helicopters with oil cooler blower bracket P/N 369F5190-1 installed.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.