SDR ASMF200504013

Service difficulty report · Ptu · Doug DC987

Difficulty date: April 16, 2005
Submitted: April 18, 2005
Operation: Air carrier
Aircraft: N754RA
Make and model: Doug DC987
Aircraft serial: 49641
Aircraft time: 34,310 hours, 23,880 cycles
System (JASC): 2910 · Hydraulic System, Main
Part: Ptu
Condition: Failed
Location: Hyd System
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: D

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

What was found

AIRCRAFT RETURNED TO PLATFORM AS A CONSEQUENCE OF DURING TAXING, RIGHT HYDRAULIC SYSTEM WAS FAILED. DURING REVISION, RIGHT HYDRAULIC PUMP CONTINUED INDICATING PRESSURE WHEN IT WAS SHUTOFF AND HYDRAULIC POWER TRANSFER UNIT (PTU) WAS DETECTED WITH FAIL. THE PTU WAS REPLACED IAW MM 29-10-08, TESTED CORRECT.

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