# SDR DXTA2021122954330

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 27, 2021
- Submitted: December 29, 2021
- Operation: Air carrier
- Aircraft: [N598QS](https://openairdocs.org/aircraft/N598QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0157
- Aircraft time: 3,213 hours, 2,113 cycles
- System (JASC): [3220 · Nose/Tail Landing Gear](https://openairdocs.org/jasc/3220)
- Part: Unknown
- Part number: S31771
- Part serial: NSN
- Condition: Defective
- Location: Zone 100
- Stage of operation: CR
- How discovered: L
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2021122954330

## Discrepancy

NLG: REPEAT WRITE UP   AT FL240 WE FELT THE NOSE GEAR UNLOCK AND THE YELLOW AND BLACK HASH LINES SHOW UP WITH THE GEAR DISAGREE N AMBER CAP ON.  WE RAN THE QRC AND EXTENDED THE GEAR PER THE BOOK.  GEAR WENT TO THREE GREEN DOWN AND LOCKED // SIGNOFF// REMOVED FAULTY NLG UPLOCK SWITCH P/N S3177·1, REMOVED SPACER P/N 6742028-31, BOLT P/N NAS6304-44D, 4 BUSHING P/N NAS75-6-013 AND 1 BUSHING P/N NAS75C6-025 AND INSTALLED NEW NLG UPLOCK SWITCH P/N S3177-1, INSTALLED NEW SPACER P/N 6742028-31, BOLT P/N NAS6304-44D, 4 BUSHING P/N NAS75·6·013 AND 1 BUSHING P/N NAS75C6-02S, PER CUSTOMER CONVENIENCE. ADJUSTED AS REQUIRED OPS CHECKED SATISFACTORY, REF CE-680A AMM 32-32-10, 52-80-05 AND 32-32-00.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.