SDR DALA2025010200024

Service difficulty report · Check Valve · Airbus A321271NX

Difficulty date: January 2, 2025
Submitted: January 3, 2025
Operation: Air carrier
Aircraft: N522DA
Make and model: Airbus A321271NX
Aircraft serial: 11154
Aircraft time: 8,801 hours, 2,119 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Check Valve
Condition: Failed
Location: Lt A/C Pack
Stage of operation: IN
How discovered: 9
Nature of condition: B
Precautionary procedure: K

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

What was found

AIRCRAFT 5022, STRONG FUMES "DIRTY SOCK" IN COCKPIT AND CABIN DESCENDING THROUGH 11,000: PILOTS DOWNED OXYGEN AND ACCOMPLISHED SMOKE & FUMES QRH. FUMES SOMEWHAT CLEARED PRIOR TO LANDING. TAXIED TO GATE. CORRECTIVE ACTION: REPLACED LEFT PACK CHECK VALVE, AND NBR 1 AND 2 ENGINES LB30 SEALS. (LP 6961867, 0738408)

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