# SDR DLM88020142

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 5, 2002
- Submitted: February 20, 2002
- Operation: Air carrier
- Aircraft: N909DE
- Make and model: Doug MD-88
- Registry model: [Doug MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88) (OpenAirDocs)
- Aircraft serial: 53418
- Aircraft time: 26,113 hours, 20,412 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic Line
- Part number: P240002080240HH
- Condition: Failed
- Location: Hydraulic Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: H, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DLM88020142

## Discrepancy

APPROX 20 MINUTES INTO FLIGHT WHILE CRUISING FL290 MASTER CAUTION ILLUMINATED W/L HYD PRESS LOW LIGHT ON.  ANNUNCIATOR PANEL HYDRAULIC PRESSURE WAS ZERO AND QTY WAS DOWN TO 2 QTS.  RAN APPROPRIATE CHECKLISTS (SHUTTING OFF THE L ENG HYD PUMP), PRESSURE STAYED AT ZERO AND QTY CAME BACK TO 7 QTS.  CHECKED LT ENG PUMP CASE DRAIN FILTER DUE LOW HYD QTY.  FILTER CHECKS NORMAL.  REPLACED LT ENG PUMP CASE DRAIN FILTER.  REPLACED LINES AT LT PRESS/CASE RETURN MOD. PRESSURE CHECKS GOOD LEAK CHECK GOOD.

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