AD 90-11-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 757-200 Series | Airworthiness Directives; BOEING Model 757 and 767 Series Airplanes |
| aircraft | The Boeing Company | 757-200CB Series | Airworthiness Directives; BOEING Model 757 and 767 Series Airplanes |
| aircraft | The Boeing Company | 757-200PF Series | Airworthiness Directives; BOEING Model 757 and 767 Series Airplanes |
| aircraft | The Boeing Company | 757-300 Series | Airworthiness Directives; BOEING Model 757 and 767 Series Airplanes |
| aircraft | The Boeing Company | 767-200 Series | Airworthiness Directives; BOEING Model 757 and 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300 Series | Airworthiness Directives; BOEING Model 757 and 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300F Series | Airworthiness Directives; BOEING Model 757 and 767 Series Airplanes |
Unsafe Condition
Intermittent altitude hold, altitude capture, and/or flight director mistracking anomalies due to Collins flight control computers (FCC) with specific Boeing part numbers (S241T100-103, -105, -106).
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove Collins FCCs with Boeing P/N S241T100-103 and replace with reworked units P/N S241T100-108 within 24 months. Remove FCCs with P/N S241T100-105/-106 and replace with P/N S241T100-108 within 12 months. Follow Collins Service Bulletins FCC-701-22-10 (Rev 2) and FCC-701-22-16.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 24 months after the effective date of this AD (July 2, 1990) for P/N S241T100-103; within the next 12 months after the effective date for P/N S241T100-105/-106.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BOEING Model 757 and 767 series airplanes equipped with Collins flight control computers (FCC), certified 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
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