Service difficulty report · Skin · Boeing 737852

Difficulty date
November 17, 2020
Submitted
January 23, 2021
Operation
Air carrier
Aircraft
N825AM
Make and model
Boeing 737852
Aircraft serial
36699
Aircraft time
24,197 hours, 9,007 cycles
Part
Skin
Condition
Damaged
Location
Wing
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

DURING TRANSIT CHECK, IT WAS DETECTED A GOUGE OF THE LEADING EDGE LOWER SKIN. MAINTENANCE PERSONNEL PERFORMED A REVISION, DETECTING A GOUGE 0.687 LENGTH, 208.75" WIDTH AT 56.25" OF THE RIGHT WING LEADING EDGE LOWER SKIN. THE DAMAGE WAS REMOVED, IAW SRM 57-20-01-1A-1, PARAGRAPH 4B(2), FIGURE 104, DETAIL D, TABLE 104. AN ULTRASONIC THICKNESS MEASUREMENT WAS PERFORMED, IAW 737 NDTM PART 4, 51-00-00, PROCEDURE 2 WITH MAXIMUM DEPTH OF REMOVED MATERIAL OF 0.029, IAW 737-800 SRM 57-20-01-1A-1, ALLOWABLE DAMAGE 1, TABLE 104, BEING WITHIN LIMITS. HIGH FREQUENCY EDDY CURRENT INSPECTION ON REWORKED AREA WAS PERFORMED, IAW 737 NDTM PART 6, 51-00-00, PROCEDURE 23, NO CRACKS WERE FOUND. A FLAP PEEN PROCEDURE ON REWORKED AREA WAS PERFORMED, IAW SRM 57-20-01-1A-1, PARAGRAPH 2H (1) AND SOPM 20-10-03. A CHEMICAL CONVERSION COATING WAS APPLIED, IAW SRM 51-20-01-0G-0, PARAGRAPH 5 A SURFACE FINISHES WERE APPLIED, IAW SRM 57-20-01-1A-1, PARAGRAPH 2H (4), ALL CORRECT.