Service difficulty report · Skin · Boeing 757222

Difficulty date
February 12, 2020
Submitted
February 16, 2020
Operation
Air carrier
Aircraft
N598UA
Make and model
Boeing 757222
Aircraft serial
28751
Aircraft time
77,560 hours, 19,875 cycles
Part
Skin
Part number
112N4001
Condition
Cracked
Location
#2 Pylon
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 NDT HFEC ROTO INSPECTION OF #2 PYLON UPPER SKIN AT DRAG FITTING IAW NDTM PART 6, 51-00-16 CRACK INDICATIONS WERE FOUND AT HOLE #9 - CRACK POSITION :- 7:O''CLOCK; CRACK DEPTH :-0.315"; CRACK SIZE :-0.060" REF. AAR N/R 9756199 SEE ECRA 5720-03164 R/H WING UPPER SKIN, FWD DRAG FITTINGS, AND SHIM REPLACEMENT INTERIM REPAIR. ON OR BEFORE JAN 23 2022 OR THE ACCUMULATION OF 21975 TOTAL FLT CYCLES, WHICHEVER COMES FIRST, ACCOMPLISH A PERMANET REPAIR PER PART 3 OF ECRA 5720-03164. PLANNING TO CONTACT ENGINEERING AFTER NOV 23, 2021 OR THE ACCUM ULATION OF 19975 TOTAL A/C FLT CYCLES BUT BEFORE DEC 23 2021 OR REPAIR INSTRUCTIONS. THE ACCUMULATION OF 20,975 TOTAL A/C FLT CYCLES FOR THE PERM OK TO PLACE ON DIP PER ECRA 5720-03164 PART 3 ON OR BEFORE JANUARY 23, 2022 OR THE ACCUMULATION OF 21,975 TOTAL AIRCRAFT FLIGHT CYCLES. TOMC-APPROVAL FROM SC1ELBYC COMMENT QC