FAA Aviation Maintenance Alerts

Cessna: 402C; Cracked Engine Nacelle Support Beam; ATA 5410
A mechanic says, “During compliance with AD 2005-12-13 (installation of Cessna Spar mod, kit SK402-47B) it was discovered the left nacelle outboard engine support beam channel (P/N 5654111-1) had a 1.75 inch crack running longitudinally on (its) inboard radius. (See the two drawings for the crack location.) The area of this crack is in a location where that portion of the channel is to be removed and the new channel installed per SK402-47B.” July 2007 AC 43-16A Page 7 AC 43-16A July 2007 Page 8
The FAA Service Difficulty Reporting System database revealed another 402 with a “wrinkled” mount—same part number—in 1999.) Part Total Time: 15,951.4 hours. More