# SDR CALA2026091619464

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 13, 2026
- Submitted: September 16, 2026
- Operation: Air carrier
- Aircraft: [N12109](https://openairdocs.org/aircraft/N12109), registered now
- Make and model: Boeing 757224
- Aircraft serial: 27299
- Aircraft time: 117,945 hours, 27,312 cycles
- System (JASC): [3234 · Landing Gear Selector](https://openairdocs.org/jasc/3234)
- Part: Control Lever
- Part number: 257T110320
- Part serial: 1539
- Condition: Faulted
- Location: Zone 700
- Part time: 59,575 hours, 11,656 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026091619464

## Discrepancy

GEAR DISAGREE ON FINAL THREE GEAR LIGHTS GEAR WARNING LIGHT WENT OUT ON THE GND PER INBOUND CREW -  WHEN GEAR SELECTED DOWN - ALL THREE GEAR DOWN GREEN LIGHTS AND GEAR DISAGREE RED LIGHT. RETRACTED GEAR AND CYCLED AGAIN. ON 2ND ATTEMPT SAME RESULT. USED GEAR CANCEL OVERRIDE & LANDED. ONCE WEIGHT ON WHEELS ALL DISAGREE LIGHTS OUT & GEAR INDS NORMAL. ACCOMPLISHED BITE OF PSEU IAW FIM 32-09 FAULT TREE 804. FAULT CODES 421,422,423,424 DISPLAYED. NOTE NO EICAS MESG DISPLAYED ON ARRIVAL. ALL FAULTS INDICATED MLG LEVER MODULE (M937). CONTINUED FROM AMM 32-31-01-404-011 STEP D.10.C TO STEP. D.10.J. HANDLE LOCKED WHEN NEEDED & 3 GREEN LIGHTS LIGHT UP WHEN NEEDED. CONITUE ON STEP D.11 REMOVED & INSTALLED NEW CONTROL LEVER MODULE FOR MLG IAW AMM 32-31-01-404-011 TO STEP D (10) (C).  ACCOMPLISHED ALL STEPS ON LDG MODUAL CONTROL LEVER INSTALLATION TEST UP TO ALTERNATE GEAR EXTENSION TEST. AMM 32-31-01-404-011 UP TO STEP 3 D (12). COMPLETED GROUND PROX TEST STEP D(13-17) OPS CHKD GOOD. PERFORMED GROUND PROXIMITY TEST STEP D(13-17) OPS CHECK GOOD IAW AMM 34-46-00.

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