Service difficulty report · Sensor · Doug DC1030F

Difficulty date
September 16, 2009
Submitted
September 21, 2009
Operation
Air carrier
Aircraft
N318FE
Make and model
Doug DC1030F
Aircraft serial
46837
Aircraft time
81,926 hours, 22,360 cycles
Engine
Ge CF650C2
Part
Sensor
Part number
8901224
Part serial
WYG40809
Condition
Malfunctioned
Location
Nr 1 Engine
Stage of operation
TO
How discovered
O
Nature of condition
J
Precautionary procedure
C

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

What was found

DURING T-OFF, WHILE SETTING POWER TARGET 114.4 WHEN N1 REACHED APPROX 98-99 PERCENT (70KTS) N2 EXCEEDENCE ON NR 01 ENGINE, RESET T-OFF AT 70KTS AMBER ENG 1 EXCEDENCE DISPLAYING, AMBER 109,9 N2 DISPLAYED VCP R NO RESTRICTION REF: 72-00-00-6 1, NR 1 ENGINE, N2 EXCEEDENCE 109.9 REQUIRES BOROSCOPE WITHIN 10 FLIGHT CYCLES REF AMM 72-00-00-6 IAW AMM 72-00-00-6-1 INSPECTED NR 01 ENG INTAKE/EXHAUST. NO DAMAGED FOUND A/C OK FOR 10 CYCLES. VCP R OIL REFERENCE: 72-00-00-6 1 TERMINATING ACTION REQUIRED AT OR BEFORE: SPEC: 10 CYCLES, EXPIRATION: 22,370 CYCLES. C/W BORESCOPE INSP IAW MM 72-00-00-6 FOUND ONE BLADE NICKED AND TORN THAT NEEDS BLENDED ON THE NR 1 STAGE OF THE HPC. BLADE IS MARKED WITH A (NR 27) ON IT FOR REF. NO OTHER DAMAGED NOTED MM 72-36-00-2. REMOVED AND REPLACED CIT SENSOR IAW AMM 73-20-02-2 AND CORE SPEED SENSOR IAW AMM 77-12-01-2, CKD OK.

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