Détails:
During taxi to takeoff the crew sensed an odor similar to an electrical fire, and smoke became apparent in the cockpit. Both generators and the battery master were secured. The right generator would not accept a load and smoke was coming from the right wing accessory jbox in the right wheel well. Three occupants deplaned and initially extinguished the fire, which reignited due to hot metal and compromised fuel/oil lines. All systems were secured and the pilot then evacuated the airplane, which was consumed by the fire. The pilot estimated that fire fighting equipment did not arrive for 20-25 minutes after the fire began. FAA inspectors were unable to determine the fire source from the burned wreckage. However, the operator's report stated that the right starter solenoid did not open after engine start causing the starter to remain linked to the electrical system. this resulted in a system overload and subsequent electrical fire. Both fuel and oil lines were routed through the right wheel well for cockpit indications.
PROBABLE CAUSE: "The engine starter remained engaged after engine start and the electrical system overheat."
| Statuts: | Accident investigation report completed and information captured |
| Date: | dimanche 16 septembre 1990 |
| Heure: | 13:26 |
| Type/Sous-type: |  Howard Cargo Harpoon |
| Compagnie: | Confederate Air Force |
| Immatriculation: | N7428C |
| Numéro de série: | 15-1228 |
| Année de Fabrication: | |
| Heures de vol: | 1900 |
| Moteurs: | 2 Pratt & Whitney R-2800-31 |
| Equipage: | victimes: 0 / à bord: 4 |
| Passagers: | victimes: 0 / à bord: 0 |
| Total: | victimes: 0 / à bord: 4 |
| Dégats de l'appareil: | Détruit |
| Conséquences: | Written off (damaged beyond repair) |
| Lieu de l'accident: | Conroe-Montgomery County Airport, TX (CXO) ( Etats-Unis d'Amérique)
|
| Phase de vol: | Au roulage (TXI) |
| Nature: | Privé |
| Aéroport de départ: | Conroe-Montgomery County Airport, TX (CXO/KCXO), Etats-Unis d'Amérique |
| Lafayette Regional Airport, LA (LFT/KLFT), Etats-Unis d'Amérique |
During taxi to takeoff the crew sensed an odor similar to an electrical fire, and smoke became apparent in the cockpit. Both generators and the battery master were secured. The right generator would not accept a load and smoke was coming from the right wing accessory jbox in the right wheel well. Three occupants deplaned and initially extinguished the fire, which reignited due to hot metal and compromised fuel/oil lines. All systems were secured and the pilot then evacuated the airplane, which was consumed by the fire. The pilot estimated that fire fighting equipment did not arrive for 20-25 minutes after the fire began. FAA inspectors were unable to determine the fire source from the burned wreckage. However, the operator's report stated that the right starter solenoid did not open after engine start causing the starter to remain linked to the electrical system. this resulted in a system overload and subsequent electrical fire. Both fuel and oil lines were routed through the right wheel well for cockpit indications.
Probable Cause:
PROBABLE CAUSE: "The engine starter remained engaged after engine start and the electrical system overheat."
Accident investigation:
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Sources:
» NTSBPhotos
Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Conroe-Montgomery County Airport, TX et Lafayette Regional Airport, LA est de 327 km (205 miles).
La distance entre Conroe-Montgomery County Airport, TX et Lafayette Regional Airport, LA est de 327 km (205 miles).
Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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