Service difficulty report · Shaft

Difficulty date
October 24, 2016
Submitted
October 25, 2016
Operation
General aviation
Engine
Rroyce RB211TRENT89
Engine time
58,685 hours, 7,433 cycles
Part
Shaft
Part number
FK32580
Part serial
RRDCDDB44607
Condition
Failed
Location
Engine
Part time
9,689 hours, 1,061 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 HPC ROTOR SHAFT STG 1-4 INSPECTION, THE 41-3028 & 41-3029 SEAL FINS WERE FOUND WORN WITH JAGGED EDGE, NEVEN RUBBED INDICATIONS F&C. SURFACE ADJACENT TO LOC.41-3028 SEAL FIN FOUND SIGN OF MATERIAL DEPOSITS. SIGNS OF TITANIUM FIRE. DUE TO THE ABOVE OUT OF LIMITS MEASUREMENTS, THE ENGINE WILL BE PUT OUT OF SERVICE WITH 4519 CYCLES REMAINING.