Cessna TU206G Stationair
Sheared Alternator Belt
Pilot heard a squealing sound at engine start. Voltmeter showed discharge. The alternator belt was found sheared and was replaced.
Part total time: 370.0 hours
Cessna 207 Skywagon
Stretched Alternator Belt
Alternator belt (p/n 5395473119) will not hold tension. It will stretch from a proper tension in a short period of time, 10-25 hours.
Part total time: 199.0 hours
Cessna 208 Caravan
Broken Air Conditioning Belt
During departure, the captain detected a burning odor and elected to return and land. Maintenance found the air conditioner belt broken and rubbing on the air conditioning compressor pulley, causing the odor. Replaced broken belt and returned aircraft to service.
Part total time:Â Unknown
Cessna 208B Grand Caravan
Broken, Rubbing A/C Belt
Pilot noticed smell of burnt rubber, followed by smoke in the cockpit. Air conditioning belt had broken and was rubbing on the compressor pulley.
Part total time: Unknown
Diamond DA42 Twin Star
Incorrect Belt Installation
Right alternator failed and engine coolant temperature rose. The crew shut down the right engine and feathered its propeller. Aircraft diverted. V-belts had recently been replaced on both engines. Investigation revealed possible incorrect installation of both V-belts.
Part total time: Unknown
Piper PA-28-181 Archer II/III
Mismanufactured Belt
Alternator failed in flight due to a broken alternator pulley. With idler pulley adjusted, the belt is too short to allow appropriate tension.
Part total time: Unknown
Piper PA-31-350 Navajo Chieftain
Wet Alternator Belt
Right engine charging system failed in flight as the airplane experienced heavy rain. The right alternator’s location puts it directly into the path of the oncoming rain. It appears the alternator belt got excessively wet and started slipping, causing the belt teeth to tear off. The belt was replaced and the system tested serviceable.
Part total time: 216.0 hours
Piper PA-32-300 Cherokee Six
Broken Alternator Belt
The aircraft lost all electric power due to alternator belt breaking. All narrow belts are installed on factory-installed air conditioning. Alternator drive belt conversion kits, p/n 767310, need to be installed IAW service letter 104C.
Part total time: Unknown
