SDR ASMF200405008

Service difficulty report · Blade · Doug DC987

Difficulty date: May 6, 2004
Submitted: May 7, 2004
Operation: Air carrier
Aircraft: N755RA
Make and model: Doug DC987
Aircraft serial: 49727
Aircraft time: 29,051 hours, 19,481 cycles
Engine: Pwa JT8D219
Engine time: 35,494 hours, 25,735 cycles
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Blade
Condition: Damaged
Location: Lt Engine
Part time: 9,369 hours, 6,346 cycles
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

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

What was found

DURING OVERNIGHT SERVICE, FOD´S WERE DETECTED ON 15 BLADES OF LT ENGINE. BOROSCOPE INSPECTION WAS PERFORMED ON C6 AND C7 COMPRESSOR STAGE IAW MM 72-00-00 AND NO DAMAGE WAS DETECTED. ON FAN STAGE, 3 BLADES WERE DETECTED WITH DAMAGES AND C1 FAN STAGE WAS REPLACED IAW MM 72-33-02, TEST CORRECT.

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