AD 77-17-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron, Inc. | 205A-1 | Airworthiness Directives; Bell Model 212 and 205A-1 Helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 212 | Airworthiness Directives; Bell Model 212 and 205A-1 Helicopters |
Unsafe Condition
Cracks in the tail rotor blade pitch change horn, part number 212-010-716-5 and -9, could result in tail rotor blade loss or control failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect pitch change horns for cracks using dye penetrant, particularly in the barrel nut and bushing area. Replace cracked horns before further flight. Reinstall control rod bolt and barrel nut per manufacturer's manuals. AD becomes inapplicable if pitch change horns part number 212-010-716-11 are installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 25 hours' time in service after August 19, 1977, and thereafter every 100 hours' time in service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Bell Model 212 helicopters, serial numbers 30502 through 30804, 30806 through 30810, 30812, 30814, 30815, 30817, 30818, 30820 through 30825, 30827, 30828, 30829, and Model 205A-1 helicopters, serial numbers 30001 through 30247, equipped with tail rotor blades part number 212-010-750.
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.