Service difficulty report · Dump Valve · Saab 340B

Difficulty date
June 16, 2007
Submitted
June 20, 2007
Operation
Air carrier
Aircraft
N323AE
Make and model
Saab 340B
Aircraft serial
340B323
Aircraft time
23,074 hours, 24,310 cycles
Part
Dump Valve
Part number
8120
Part serial
350
Condition
Failed
Location
Zone 200
Part time
23,074 hours, 24,310 cycles
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

MAIN HYDRAULIC PRESSURE DROPS FROM 3000 PSI TO 2100 PSI WITHIN 35 SECONDS ON GROUND AND INFLIGHT. REMOVED AND REPLACED HYDRAULIC ACCUMULATOR PRESSURE DUMP VALVE IAW SAAB AMM. OPERATIONAL CHECK GOOD. RETURNED AIRCRAFT TO SERVICE.

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