SDR CALA2025121012011

Service difficulty report · Unknown · Boeing 7378

Difficulty date: December 9, 2025
Submitted: December 11, 2025
Operation: Air carrier
Aircraft: N27277
Make and model: Boeing 7378
Aircraft serial: 64612
Aircraft time: 11,324 hours, 3,805 cycles
System (JASC): 2120 · Air Distribution System
Part: Unknown
Condition: Odor
Location: Cockpit
Stage of operation: DE
How discovered: O
Nature of condition: B
Precautionary procedure: O

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

What was found

DURING DESCENT, A STRONG ODOR ENTERED THE FLT DECK & LASTED UNTIL LANDING. GOT WEAKER OVER TIME. PERFORM FIM 21-00, TASK 830 FOR ODOR. BOTH HYDRAULIC SYSTEMS ARE NOT OVERSERVICED. RAN APU, BOTH PACKS ON. SWITCH TO COLD & WARM. COULD NOT DUPLICATE ODOR. INSPECTED BOTH E/E BAY & BOTH ENGINE INTAKES. NOTHING UNUSUAL WAS FOUND.

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