SDR DLM88090398

Service difficulty report · A/C Pack · Doug MD88

Difficulty date: March 11, 2009
Submitted: March 18, 2009
Operation: Air carrier
Aircraft: N998DL
Make and model: Doug MD88
Aircraft serial: 53370
Aircraft time: 46,354 hours, 34,490 cycles
System (JASC): 2150 · Cabin Cooling System
Part: A/C Pack
Condition: Inoperative
Location: Left
Stage of operation: DE
How discovered: O
Nature of condition: J
Precautionary procedure: B

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

What was found

CABIN PRESSURE FAILED WHILE DESCENDING OUT OF FL 330. CABIN PRESSURE CLIMBED ABOVE 10K DURING DESCENT PASSENGER O2 MASKS DEPLOYED, FLOW LIGHT FLICKERED SEVERAL TIMES. MAINTENANCE IN PROGRESS, REMOVED AND REPLACED LT WATER SEPARATOR TEMAMM. REPLACED LT PNEU PILOT PRESS REG PER AMM REPLACED LEFT A/C PILOT PRESSURE REGULATOR PER AMM SN ON 5421. REPLACED PRSOV PER AMM. REMOVED AND REPLACED RT AC FLOW CONTROL VLV OPN AND GOOD.

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