# SDR EISA20010150

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 23, 2001
- Submitted: February 26, 2002
- Operation: Air carrier
- Aircraft: [N721RW](https://openairdocs.org/aircraft/N721RW), registered now
- Make and model: Boeing 727-2M7
- Registry model: [Boeing 727-2M7](https://openairdocs.org/model/boeing-727-2m7) (OpenAirDocs)
- Aircraft serial: 21200
- Aircraft time: 63,375 hours, 34,456 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Accessory Unit
- Part number: 656021132
- Part serial: 680115
- Condition: Inoperative
- Stage of operation: CL
- How discovered: V
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/EISA20010150

## Discrepancy

AFTER T/O, GEAR HANDLE RAISED, ALL 3 GEAR UNSAFE RED LIGHTS REMAIN ILLUMINATED ON FNT PANEL & TAILSKID LIGHT ON F/E PANEL.  PERFORMED ABNORMAL CHECKLIST WITH SAME RESULT.  RETURN TO IND. FOR UNEVENTFUL LANDING.  DOWN & LOCK INDICATIONS ALL NORMAL & BELOW MAX LANDING WEIGHT.CORRECTIVE ACTION:R/R LANDING GEAR ACCESSORY UNIT OPS CK GOOD PER MM 32-09

---
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.