Service difficulty report · Shutoff Valve · Doug MD88

Difficulty date
April 19, 2020
Submitted
April 20, 2020
Operation
Air carrier
Aircraft
N916DL
Make and model
Doug MD88
Aircraft serial
49591
Aircraft time
83,432 hours, 64,102 cycles
Part
Shutoff Valve
Condition
Malfunctioned
Location
Bleed Air Sys
Stage of operation
DE
How discovered
O
Nature of condition
O
Precautionary procedure
B, G

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

What was found

SHIP 0916 - DURING DESCENT IN TO ATLANTA, THE CABIN ALTITUDE BEGAN CLIMBING AT ABOUT 20K'. PER THE QRH THE CREW PERFORMED AN EXPEDITED DESCENT. PASSENGER OXYGEN MASKS DEPLOYED AT 14K'. CORRECTIVE ACTION: MAINTENANCE REPLACED THE LT ENG PRSOV, PILOT, AND LT CABIN SUPPLY TEMP BULB. THEY ALSO FOUND THE RT ENG BOOT AT RT TEMP CONTROL WAS PUNCTURED AND REPLACED THE BOOT. ENGINE RUNS AND VESSEL LEAK CHECKS WERE ALL GOOD.

More about the Doug MD-88