AD 91-26-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 744 | Airworthiness Directives; BRITISH AEROSPACE Viscount Model 744, 745D, and 810 Series Airplanes |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 745D | Airworthiness Directives; BRITISH AEROSPACE Viscount Model 744, 745D, and 810 Series Airplanes |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 810 | Airworthiness Directives; BRITISH AEROSPACE Viscount Model 744, 745D, and 810 Series Airplanes |
Unsafe Condition
Corrosion of the mild steel balance weights and the forward face of the leading edge members could reduce controllability of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 180 days after the effective date, and every 4 years thereafter, visually inspect elevators for corrosion in the mild steel balance weights and leading edge members per applicable British Aerospace PTL. Repair corrosion in balance weights before further flight; repair or replace leading edge members if corrosion exceeds PTL limits before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 180 days after the effective date of this AD, and thereafter at intervals not to exceed 4 years
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
All Viscount Model 744, 745D, and 810 series airplanes, certificated in any category.
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.