AD 2013-05-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McDonnell Douglas | Various | Airworthiness Directives; Hughes Helicopters, Inc., and McDonnell Douglas Helicopter Systems (Type Certificate Is Currently Held by MD Helicopters, Inc.) Helicopters |
Unsafe Condition
Too short an edge distance from an aft longeron rivet to the edge of a tailboom frame ring, which could result in failure of the tailboom and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Measure the distance from the aft face of the station 209.78 frame ring to the center of rivet No. 1 and rivet No. 2 at the four locations where the frame ring attaches to the tailboom longeron. If either rivet is more than 0.50 inches (12.7 millimeters) from the aft face of the frame ring, modify the location by fabricating and installing a doubler.
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Compliance Time
Within 6 months or 100 hours time-in-service, whichever occurs first.
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Affected Aircraft
MD Helicopters, Inc. (MDHI) Model 369D, 369E, 369F, and 369FF helicopters with tailboom assembly, part number 369D23500-505, -507, -511, or -513 with a serial number prefix of '7604' and -0001 through -0003, -0006 through -0047, -0049 through -0082, or -0084 through -0113, installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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