SDR CALA2026072217944

Service difficulty report · Switch · Boeing 757224

Difficulty date: July 20, 2026
Submitted: July 22, 2026
Operation: Air carrier
Aircraft: N14121
Make and model: Boeing 757224
Aircraft serial: 27563
Aircraft time: 91,269 hours, 22,044 cycles
System (JASC): 2120 · Air Distribution System
Part: Switch
Condition: Out Of Position
Location: Zone 200
Stage of operation: NR
How discovered: O
Nature of condition: M, B
Precautionary procedure: O

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

What was found

RAN QRH FOR FUME EVENT LEAD TO EQPT OVHT EICAS MSG. CONDITIONAL INSPECTIONS COMPLETE. PERFORMED SMOKE-ODOR IN THE FLIGHT DECK OR CABIN CONDITIONAL INS PECTION IAW AMM 05-51-58. NO ODORS WERE NOTICED. FOUND BOTH RECIRCULATING SWITCHES IN OFF, CAUSING EQUIPMENT OVERHEAT MESSAGE. VISUAL INSPECTION AND TESTS ACCOMPLISHED FOR PACKS, RECIRCULATING FANS, OVENS, ETC, NO SMELL OR ODOR NOTICED.