What was found
ON CLIMBOUT FROM ANCHORAGE THE R1 WINDOW STARTED ARCING & CRACKING. A 15 INCH CRACK DEVELOPED ON THE TOP EDGE OF THE WINDOW. FUEL WAS JETTISONED & A/C RETURNED TO ANCHORAGE. REMOVED & REPLACED R1 WINDOW.
- Difficulty date
- November 19, 2004
- Submitted
- December 7, 2004
- Operation
- Air carrier
- Aircraft
- N858FT
- Make and model
- Boeing 747123
- Aircraft serial
- 20109
- Aircraft time
- 78,159 hours, 18,609 cycles
- Engine
- Pwa JT9D7A
- System (JASC)
- 5610 · Flight Compartment Windows
- Part
- Window
- Part number
- 60B100286
- Part serial
- 9012448902P22
- Condition
- Cracked
- Location
- Cockpit
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- J, A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.