Service difficulty report · Engine · Boeing 767322

Difficulty date
February 16, 2012
Submitted
March 12, 2012
Operation
Air carrier
Aircraft
N651UA
Make and model
Boeing 767322
Aircraft serial
25389
Aircraft time
86,454 hours, 13,759 cycles
Engine
Pwa PW4060
Engine time
70,978 hours, 8,532 cycles
Part
Engine
Part number
PW606R
Part serial
724630
Condition
Vibration
Location
Nr 1
Stage of operation
IN
How discovered
O
Nature of condition
E
Precautionary procedure
O

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

What was found

DUE TO REPEAT VIB IND HIGHER THAN NORMAL TO PREVENT IRREG OPS, ACCOMPLISH FAN BLADE ROOT LUBE. `WILL REQUIRE VIBRATION SURVEY (HIGH POWER RUN), TEST NR 8 PER AMM. ACP'D TEST NR 8 VIBRATION SURVEY. TEST FAILED, (N1 VIB) INDICATES 4.2 AT 78% N1 AND (BB VIB) WAS 2.3 AT 77% N1. ACCMP'D TRIM BALANCE REF SFOPD JIC R0931. ACCMP VIBRATION SURVEY REF MM. CHKS WITHIN LIMITS. MAX VIB 2.8 N1 AT 78% N1 ON DECEL.