AD 2006-08-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | MD | Various | Airworthiness Directives; MD Helicopters, Inc. Model 600N Helicopters |
Unsafe Condition
Failure of tailboom attachment fittings, separation 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
Within 5 hours time-in-service (TIS), install six inspection holes in the aft fuselage skin panels. Inspect all four tailboom attachment fittings, surrounding areas, upper longerons, upper nut plates, and upper angles for cracks. Add a washer to each bolt. Replace cracked angles or install new clips as necessary. Replace the upper right tailboom attachment bolt and, if broken, replace the remaining bolts with airworthy ones. Within 25 hours TIS, inspect all attachment fittings and surrounding areas, replace the upper right tailboom attachment fitting, paint the inspection area, inspect attachment bolts for wear or damage, replace worn or damaged bolts, and replace all nut plates. Thereafter, inspect upper and lower tailboom attachment fittings, angles, and nut plates at specified intervals.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 5 hours TIS for initial inspections; within 25 hours TIS for additional actions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
MD Helicopters, Inc. Model 600N helicopters.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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