Service difficulty report · Pressure System · Boeing 7378BK

Difficulty date
August 5, 2022
Submitted
August 8, 2022
Operation
Air carrier
Aircraft
N822SY
Make and model
Boeing 7378BK
Aircraft serial
33017
Aircraft time
56,210 hours, 37,182 cycles
Part
Pressure System
Condition
Inoperative
Stage of operation
TO
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

DEFECT: L AND RIGHT BLEED PRESSURE AT "0" AFTER TAKEOFF. CABIN ALT AT "4000" WHILE LEVELED OFF. RESOLUTION: DCPC BITE PROCEDURE, NO CURRENT FAULTS. LAST LEG HISTORY FAULT LO INFLOW/ HI LEAK. REF FIM 21-31 TASK 801. FOUND 3 C/B'S TRIPPED. P6-4 A5&A7&B7. (BLEED AIR VALVES.) RESET C/B'S AND ACCOMPLISHED ENGINE BLEED AIR TEST PER AMM 36-00-00-860-804. ALL CHECKS GOOD. CABIN PRESSURIZED NORMALLY ON GROUND WITH NO FAULTS NOTED. A/C IS OKAY FOR CONTINUED SERVICE.

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