# SDR RAAA97B1023

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N831RV](https://openairdocs.org/aircraft/N831RV), registered now
- Make and model: Boeing 727-22C
- Registry model: [Boeing 727-22C](https://openairdocs.org/model/boeing-727-22c) (OpenAirDocs)
- Aircraft serial: 19093
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Sequence Valve
- Part number: 1U1085
- Condition: Cracked
- Location: Rt Mlg
- Stage of operation: CL
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/RAAA97B1023

## Discrepancy

FLIGHT CREW REPORTED 1 MINUTE AFTER TAKEOFF ON CLIMBOUT, A-SYSTEM HYDRAULIC QUANTITY DROPPED TO 0 AND A-SYTEM LOW PRESSURE LIGHTS ON.  EXTENDED LDG MANUALLY AND RETURNED TO LAND OVERWEIGHT AT ANC WITHOUT INCIDENT.  CHANGED RMLG LOCK OPERATED SEQUENCE VALVE PER 727 MM 32-32-31 DUE APPROX 2 INCH CRACK IN VALVE BODY.  ACCOMPLISHED OVERWEIGHT LANDING INSPECTION.  CHANGED A-SYSTEM CASE DRAIN FILTERS AND NR 1 ENGINE HYD PUMP.  PERFORMED LANDING GEAR RETRACTION TEST.

---
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.