# SDR SWAA2023041727595
- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2023
- Submitted: April 17, 2023
- Operation: Air carrier
- Aircraft: [N7743B](https://openairdocs.org/aircraft/N7743B), registered now
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 36718
- Aircraft time: 47,697 hours, 24,695 cycles
- System (JASC): [3260 ยท Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Sensor
- Condition: Faulty
- Location: Zn 100 Fus Lower
- Stage of operation: TO
- How discovered: 9
- Nature of condition: J, O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023041727595
## Discrepancy
LEFT MAIN GEAR DISAGREE LIGHT ON BOTH ILLUMINTED RED&GREEN AND STAYED ILLUMINATED IN UP AND OFF HANDLE POSITION ;RANS QRH<[01] -FOUND FAULTS MSG IN EEC 73-31231;7331-241;73-31232 AND 73-31242; NO FAULT CODES FOUND CDS;PSEU;SMYD.
-AS PER FIM73-24;TASK812 AND TECH FIEDLD ADVISED L/H DN LOCK SESORS RESISTANCE VALVE MEASUREMENT CHK; FOUND DN LOCK SENSOR(S71)RESISTANCE VALVE SLIGHT HIGHER THAN OTHER SONSORS.
-REPLACED DN LOCK SENSOR(S71) PER AMM 32-61-31
-L/G LEVER UP OPS CHKED ON AIR MODE WITH L/G PROXIMITY SENSOR ACT? DEACTIVATE KIT PER AMM 32-09-12;[02] FOUND FAULTS MSG IN EEC 73-31231;7331-241;73-31232 AND 73-31242; NO FAULT CODES FOUND CDS;PSEU;SMYD.
-AS PER FIM73-24;TASK812 AND TECH FIEDLD ADVISED L/H DN LOCK SESORS RESISTANCE VALVE MEASUREMENT CHK; FOUND DN LOCK SENSOR(S71)RESISTANCE VALVE SLIGHT HIGHER THAN OTHER SONSORS.
-REPLACED DN LOCK SENSOR(S71) PER AMM 32-61-31
-L/G DOWN LOCK SENSOR OPS TEST WITH LEVER UP & ON AIR MODE WITH L/G PROXIMITY SENSOR ACT? DEACTIVATE KIT PER AMM 32-09-00; 32-09-01; NO FAULT NOTED;[03] ERROR CORRECTION
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