SDR UIEA2019081305022

Service difficulty report · Floor Support · Boeing 747422

Difficulty date: August 28, 2019
Submitted: September 3, 2019
Operation: Air carrier
Aircraft: N480MC
Make and model: Boeing 747422
Aircraft serial: 28812
Aircraft time: 75,274 hours, 8,388 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Condition: Corroded
Location: Fuselage
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

CABIN STA 820 - 940, RBL 40, FLOOR SUPPORT TRACK FOUND CORROSION. CORROSION REMOVED AS PER SRM 51-10-02. BLEND OUT DEPTH 0.035", ORG 0.090", WIDTH 1", LENGTH 6" OUT OF SRM 53-00-51 ALLOWABLE DAMAGE 1 FIG 101 LIMIT. CABIN STA 820 - 940, RBL 40, FLOOR SUPPORT TRACK REPAIRED IAW SRM 53-00-52-2R-5 REPAIR 5 AND EO 4453B734.