SDR DALA2022111707420

Service difficulty report · Bleed Air Sys · Boeing 757232

Difficulty date: November 17, 2022
Submitted: November 17, 2022
Operation: Air carrier
Aircraft: N67171
Make and model: Boeing 757232
Aircraft serial: 30839
Aircraft time: 69,411 hours, 25,777 cycles
System (JASC): 7500 · Engine Bleed Air System
Part: Bleed Air Sys
Condition: Faulted
Location: Dual
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: B, A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DIVERTED INTO MCO DUE TO DUAL BLEED FAILURE CAUSING THE LOSS OF BOTH PACKS, EMERGENCY DECENT EXECUTED. R & R THE RT ENG THE HPSOV REGULATOR, HPSOV VALVE, 450 TEMP SENSOR, AND 380 TEMP SENSOR. FOR THE LT ENG THE RFCC, 450 TEMP SENSOR, PRSOV CONTROLLER, AND HPSOV CONTROLLER WERE REPLACED. THE ISOLATION VALVE WAS ALSO REPLACED AS A PRECAUTION. A SENSE LINE LEAK CHECK, PNEUMATIC HEALTH CHECK, AND PNEUMATIC SYSTEM DATA RUN WAS ACCOMPLISHED ON BOTH ENGS. ALL PARAMETERS NORMAL.