# SDR CALA2026021013666

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 6, 2026
- Submitted: February 10, 2026
- Operation: Air carrier
- Aircraft: [N76519](https://openairdocs.org/aircraft/N76519), registered now
- Make and model: Boeing 737824
- Aircraft serial: 30132
- Aircraft time: 48,398 hours, 17,472 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Proximity Switch
- Part number: 285A16006
- Part serial: F04545
- Condition: Faulted
- Location: Zone 700
- Part time: 39,163 hours, 14,861 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026021013666

## Discrepancy

NOSE GEAR DOOR LIGHT SHOWS RED WHEN GEAR HANDLE IN OFF POSITION,  NOSE GEAR GRAVITY DROP. IAW FLT CREW, NOSE GEAR DISAGREE, GEAR COMES UP WITH HANDLE IN UP POSITION.   WHEN HANDLE SELECTED OFF, NOSE GEAR DROPS.   HANDLE SELECTED DOWN ALL GEAR SHOWS DOWN & LOCKED. VERIFIED NLG IS DOWN & LOCKED. CREW STATED,  IT APPEARS NLG NEVER REACHED UP & LOCKED POSITION. PSEU INTERROGATION AGREES WITH SAME CONCLUSION AS NO CURRENT FAULTS FOUND & NOTHING IN HISTORY FOR LAST LEG. INSP OF NLG ASSY REVEALED NO OBVIOUS FAULTS OR DEFECTS. NLG SHOWING CHROME, SO STRUT IS NOT FLAT. NLG STEERING DOES NOT APPEAR TO BE BYPASSING & TURNING UNDER NORMAL SYS PRESSURE.  ACFT NOW IN IAH OOS. CHKD PSEU POWER INPUT IAW FIM 32-09 TASK 822. FOUND C/B PSEU D2, P6-3 & DC BATTERY BUSS C/B CLOSE AT TIME OF FERRY FLT, LANDING AT IAH. CHKD FOR POWER AT PSEU UNIT, D11140, PIN 41. 28V DC PRESENT. CHKD FOR GROUND AT PIN 61, FOUND GROUND WITH IN NORMAL RANGE. R & R PSEU IAW AMM 32-09-10/401, TEST PASSED. NLG DOOR LIGHT STILL SHOWS RED UPON SWING, NO FIX. THE NOSE GEAR MANUAL EXTENSION RELEASE MECHANISM WAS FOUND TO BE THE ISSUE & REPLACED. REF LOGPAGE #7857089. NLG LIGHT NOW IN AGREEMENT WITH HANDLE POSITION.

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