SDR UIEA200600091

Service difficulty report · Brace · Boeing 7472D7B

Difficulty date: April 28, 2006
Submitted: May 23, 2006
Operation: Air carrier
Aircraft: N524MC
Make and model: Boeing 7472D7B
Aircraft serial: 21784
Aircraft time: 91,477 hours, 18,996 cycles
System (JASC): 5410 · Nacelle/Pylon, Main Frame
Part: Brace
Condition: Chafed
Location: Nr 3 Pylon
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

PYLON NR 3 DIAGONAL BRACE OUTBOARD SIDE ON ZONE 4 HAS TWO CHAFED AREAS. BLENDED OUT 2 AREAS, ACCOMPLISHED HFEC PER NDT MANUAL D6-7170, PART6 RT4 NO DEFECTS NOTED. ROTO PEEN AREAS, TREATED AND PRIMED AS PER BOEING SB 747-54-2198. REQUIRES REPETATIVE INSPECTION AT INTERVALS OF 150 TO 300 FLIGHTS-CYCLES AS PER BOEING SB 747-54-2198 AND XEO 54-042806.

More about the Boeing 747-2D7B