# SDR DALA2016051904130

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 16, 2016
- Submitted: May 25, 2016
- Operation: Air carrier
- Aircraft: N942DN
- Make and model: Doug MD-90-30
- Registry model: [Doug MD-90-30](https://openairdocs.org/model/mcdonnell-douglas-md-90-30) (OpenAirDocs)
- Aircraft serial: 53556
- Aircraft time: 38,821 hours, 32,753 cycles
- System (JASC): [2930 · Hydraulic Indicating System](https://openairdocs.org/jasc/2930)
- Part: Valve
- Condition: Cracked
- Location: Hyd System
- Stage of operation: IN
- How discovered: 9
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2016051904130

## Discrepancy

IN FLIGHT, HYDRAULIC QTY DROPPED TO 4.  CREW RAN QRH PROCEDURE AND SHUT OWN RT HYDRAULIC SYSTEM.  DURING DESCENT, IAW THE QRH, ATTEMPTED TO RE-PRESSURIZED THE RT SYSTEM.  THE RT SYS INDICATED 3000 PSI BUT QTY DROPPED TO 0.  MAINTENANCE FOUND THE LT WING OTBD ANTISKID VALVE HOUSING CRACKED.  R & R VALVE.  LEAK AND OPERATION CHECKS GOOD IAW MM.  CLEANED AFT BELLY AND MAIN GEAR WELL, APU INLET WAS DRY AND NEITHER PACK HAD SMELL.

---
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.