SDR 2001UALA00399

Service difficulty report · Floorbeam · Boeing 777222

Difficulty date: April 3, 2001
Submitted: April 18, 2001
Operation: Air carrier
Aircraft: N770UA
Make and model: Boeing 777222
Aircraft serial: 26925
Aircraft time: 23,920 hours, 4,728 cycles
Engine: Pwa PW4077
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Part number: 141W8517
Condition: Cracked
Location: Fusleage
Part time: 23,920 hours, 4,728 cycles
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

STA 246: FLOORBEAM UPPER WEB IS CRACKED AT RBL 8.5& 38.5. FLOORBEAM MID CHORD UPPER RADIUS IS CRACKED RBL 9,25,50 & LBL 8. FLOORBEAM MID CHORD IS CRKED RBL 38.5. FLOORBEAM MID CHORD UPPRER RADIUS IS CRKED RBL 44. CRKED STIFFNER AT FLOORBEAM RBL & LBL AT 26.06 FLR BM FWD VERT STIFFNER CRKED LBL38.5. FLOORBEAM AT LBL & RBL 7.88 BUCKLED STIFFNERS. SUPPLEMENTAL DATA UPDATE REPLACED STIFFENERS PER SRM 53-10-51, REPAIR 3. REPAIRED WEBS PER EVA E97-0254A. REPAIRED MID-CHORD PER SRM 53-10-51, REPAIR 1 & 2.