Service difficulty report · Skin · Boeing 737924ER

Difficulty date
January 31, 2020
Submitted
February 2, 2020
Operation
Air carrier
Aircraft
N75436
Make and model
Boeing 737924ER
Aircraft serial
33531
Aircraft time
35,612 hours, 12,342 cycles
Part
Skin
Part number
182A40021
Condition
Cracked
Location
Horizontal Stab
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

REF EA 5510-01843 REV H L/H HORIZONTAL STABILIZER LOWER IN-SPAR SKIN HAS CRACK AT STA 175.50 11 INCHES FROM FWD SPAR. REF FLEET CYCLE NON-ROUTINE 9720279. REPAIRED L/H HORIZONTAL STAB. LOWER IN-SPAR SKIN CRACK AT STA. 175.50 11 INCHES FROM FWD SPAR PER SRM 55-10-01 REPAIR 11. SEE FLEET CYCLE LOG PG. 9720270 FOR ALL WORK PERFORMED. INITIATE DIP PER SRM 55-10-01 STEP 5.A. TABLE 204 AS REQUIRED "ACCOMPLISH INITIAL INSPECTION ON OR BEFORE 50,000 TOTAL FLIGHT CYCLES. ACCOMPLISH REPETITIVE INSPECTIONS AT INTERVALS NOT TO EXCEED 9,000 FLIGHT CYCLES." PER SRM 55-10-01 PG 223 TABLE 204, INSP THRESHOLD STARTS AT 56,000 TOTAL FLIGHT CYCLES. RE-INSP AT INTERVALS OF 9,000 FLIGHT CYCLES. TOMC APPROVED. SRM 55-10-01 REPAIR 11, PG 223, STEP 5, A.