Service difficulty report · Structure · Boeing 757222

Difficulty date
January 28, 2010
Submitted
January 29, 2010
Operation
Air carrier
Aircraft
N586UA
Make and model
Boeing 757222
Aircraft serial
26710
Aircraft time
55,200 hours, 19,492 cycles
Engine
Pwa PW2037
Part
Structure
Condition
Delaminated
Location
Thrust Reverser
Component
Thrust Reverser
Component part number
315N300110SP
Stage of operation
IN
How discovered
9
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

NR 2 ENG REVERSER UPPER BI-FURCATION IS DELAMINATED. APPROX 300 SQUARE INCHES FWD END GOING AFT (MARKED) ACCOMPLISHED TIME LIMITED BACK SHEET REPAIR IAW MM-78-31-93. REPAIR INSTALLED MEASURES APPROX 280 SQ INCHES. IAW MM PG 803: REPAIR TO BE RE-CHECKED AT NEXT C-CHECK. IF C-CHECK FINDS FURTHER DELAMINATION BUT LESS THAN 330 SQ INCHES, FOUND PANEL DISBONDING BEYOND REPAIRED DOUBLER. MEASURED DISBONDED AREA EQUAL TO 380 SQ INCHES . BI-FURCATION PANEL NEEDS TO BE REPLACED IN SMB 094972 CURRENT CF9046 PERMITS TO RE-CF ADDITIONAL 300 HRS TO ALLOW TIME TO HAVE SPARE AVAILABLE. ENGINE CONTROLLER HAS BEEN CONTACTED. OK TO CREATE ANOTHER CF TO ACTIVE THE 300 HRS REPAIR LIMIT.