AD 85-16-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 767-200 Series | BOEING Model 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300 Series | BOEING Model 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300F Series | BOEING Model 767 Series Airplanes |
Unsafe Condition
Failure of the Pneumatic System Pressure Regulating and Shutoff Valve (PRSOV) and inability to assure its integrity when commanded closed by a crew procedure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the PRSOV with a serviceable valve or modify the PRSOV in accordance with Hamilton Standard Service Bulletin 36-2030. Repeat replacement for unmodified valves before specified time-in-service limits based on engine type.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 200 hours time-in-service on the PRSOV or prior to accumulation of 1500 hours time-in-service (GE CF6-80 engines) or within the next 500 hours time-in-service or prior to 3000 hours time-in-service (Pratt & Whitney JT9D engines), whichever occurs later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 767-200, 767-300, and 767-300F series airplanes equipped with General Electric CF6-80 or Pratt & Whitney JT9D series engines.
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.