Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
February 7, 2023
Submitted
March 9, 2023
Operation
Air carrier
Aircraft
N218WN
Make and model
Boeing 7377H4
Aircraft serial
32489
Aircraft time
58,667 hours, 35,279 cycles
Part
Intercostal
Condition
Cracked
Location
Zn 100 Fus Lower
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

AFT PASSENGER COMPARTMENT FLOOR STRUCTURE - WET AREA INTERCOSTAL UPPER AREA;BL0 BETWEEN STA 927 TO STA 947 IS CRACKED<[01] REMOVED INTERCOSTAL AT AFT PASSENGER COMPARTMENT FLOOR STRUCTURE WET AREA INTERCOSTAL UPPER AREA BL0 BETWEEN STA. 927 TO STA 947;[02] VERIFIED REMOVAL OF INTERCOSTAL AT AFT PASSENGER COMPARTMENT FLOOR STRUCTURE WET AREA INTERCOSTAL UPPER AREA BL0 BETWEEN STA. 927 TO STA 947;[03] LOCATED AND DRILLED NEW INSTERCOSTAL AT AFT PASSENGER FLOOR STRUCTURE WET AREA INTERCOSTAL UPPER AREA BL0 BEWTEEN STA 927 TO 947 AS PER BOEING 737-700 SRM 51-40-05-0G-0;[04] VERIFIED STEP 3 ; OK TO INSTALL NEW INTERCOSTAL.;[05] INSTALLED INTERCOSTAL AT AFT PASSENGER COMPARTMENT FLOOR STRUCTURE WET AREA INSTERCOSTAL UPPER AREA BL0 BETWEEN STA 927 TO STA 947 AS PER BOEING 737-700 SRM 51-40-02-OG-0 AND DWG #147A5400;[06] VERIFIED STEP 5; PENDING FLOOR PNL LOCATION AND DRILLING OF ATTACHMENT TO FLOOR PNL.;[07] LOCATED AND DRILLED ANGLE HOLES ATTACHMENTS TO FLOOR PANEL AS PER REFERENCE SRM 51-40-05-0G-0.;[08] VERIFIED STEP 7 AS FINAL.

More about the Boeing 737-7H4