Service difficulty report · Rib · Boeing 737990ER

Difficulty date
April 16, 2024
Submitted
April 19, 2024
Operation
Air carrier
Aircraft
N493AS
Make and model
Boeing 737990ER
Aircraft serial
41727
Aircraft time
28,911 hours, 9,015 cycles
Part
Rib
Part number
182A52014
Condition
Damaged
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

TRAILING EDGE OF LOWER FLANGE ON HORIZONTAL STAB O/B CLOSURE RIB ON R/H SIDE HAS EVIDENCE OF HEAT DAMAGE. (LAST NUTPLATE AREA). GROUNDED - YES. ACCOMP HFEL PEV NDT 51-00-00 PROCEDURE 23 NO CRACKS NOTED. ACCOMP. CONDUCTIVITY CHECK PER BNDT PART LO. 51-00-00 PROCEDURE 3. FOUND OUT OF LIMITS. MEASURED @ 33 ICAS LIOMIT FOR 0.080" IS 38.0 TO 42.5 GOOD STRUCTURAL AREA MEASURED AT 41.0 CH.CHEE 55090 RII 16 APR 2024. INITIATED MIG-5 SERIES. STARTING # 300012306. CM 41384 04/17/2024. RESISTANC CHECK PASS STEP (17) SRM 55-10-90-2R1. J W 80023 4.18.2024 7 INSP 19180 04/18/2024 MIG-5 SERIES # 300012306-300012308 CLOSED J WILLI 87554 04/18/2024. APPLIED CIC REF SRM 55-10-90-2R-1 STEP 3.B.(18). INSTALLED HORIZONTAL STABILIZER TIP REF AMM 55-10-00-400-801.