Service difficulty report · Blade · Boeing 767322

Difficulty date
January 27, 2000
Submitted
October 4, 2000
Operation
Air carrier
Aircraft
N652UA
Make and model
Boeing 767322
Aircraft serial
25390
Aircraft time
34,102 hours, 5,342 cycles
Engine
Pwa PW4060
Engine time
31,042 hours, 4,869 cycles
Part
Blade
Part number
54H705
Part serial
S85239
Condition
Cracked
Location
Compressor
Part time
28,179 hours, 4,537 cycles
Stage of operation
CL
How discovered
O
Nature of condition
X, J
Precautionary procedure
A

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

What was found

RIGHT ENGINE SUFFERED A FLAME-OUT DURING INITIAL CLIMB FROM FL330 TO FL370. TWO RESTARTS ATTEMPTED WITH NO HELP. ENGINE SURGED AT FL330 NO VIBRATION. AFTER LANDING MECHANIC FOUND METAL IN TAILPIPE. *S/D* C5 BLADE FAILURE DUE TO IMPACT DAMAGE. BLADE WAS IMPACTED BY MATERIAL LIBERATED BY C5 DISK INTEGRAL KNIFE EDGE AIRSEAL. PRATT & WHITNEY SERVICE BULLETIN 72-653 CORRECTS THIS FAILURE MODE BY REMOVING C5 KNIFE EDGE SEAL FORWARD LAND.