# SDR CA951114008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 8, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Make and model: Swrngn SA226TC
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Line
- Part number: 2781006137
- Condition: Cracked
- Location: Rh Wing Root
- Stage of operation: CL
- Nature of condition: G
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA951114008

## Discrepancy

(CAN)LOW PRESS LIGHT FLICKERED DURING GEAR RETRACT & THEN CAME ON STEADY. HYD PRESS TO ZERO & NLG UNSAFE LIGHT ON. ALTHOUGH NLG INDICATED DOWN & LOCKED. TOTAL HYD FAILURE . MLG WAS RETRACTED. CRACKED HYD LINE IN THE RH WING ROOT FOUND. FOLLOWING REPLACEMENT OF LINE, AIR WAS IN HYD SYSTEM & THE ACCUM CONTAINED NIL AIR PRESSURE & HYD FLUID HAD MIGRATED PAST THE PISTON. FAILURE MAY HAVE BEEN CAUSED BY FLAT ACCUM. POWERFUL & RAPID OSCILLATION OF HYD PRESS IS CAUSED BY THE ACTION OF PUMPS ALLOWING A "BORDEN TUBE EFFECT" & HYD TUBES ARE  STRESSED AT ANY BENDS. NO PRESSGAUGE ON ACCUMULATOR,

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