
Détails:
PSA Airlines flight 5541, a CRJ-200, N202PS, struck a tug during engine start at New York-LaGuardia Airport (LGA). There were no injuries to the 27 passengers and crew onboard. The airplane was substantially damaged.
According to the operator, the accident airplane had six deferred items on the dispatch release including, auxiliary power unit (APU) crossflow, power crossflow shutoff valves (SOV), and the APU. These deferred items rendered the fuel tank transfer on the ground inoperative and required the right engine to be started via an air cart. The flight crew indicated that the tug driver had to use hand signals to communicate back to them because the transmit function on his headset was inoperative. The captain indicated that he had requested to start both engines at the gate to limit fuel imbalance while on the ground, but the ground crew had denied that request. The towing operation was initiated with only the right engine running.Â
A cross-bleed start on the CRJ-200 requires a significant increase in thrust in the operative engine to allow the appropriate amount of bleed pressure to power the air turbine starter and imparts a lateral thrust imbalance on the airplane. A checklist item on the CRJ-200 Engine Start (Cross-Bleed) procedure is to set the parking brake prior to initiating a cross-bleed engine start. However, the captain initiated the cross-bleed start while still under tow after receiving clearance from the ground crew. According to the operator, the flight data indicated the was initiated with the right engine N2 first increasing to approximately 82.5%, and then to maximum N2 about 12 seconds after start was initiated.Â
About ten seconds later, a lateral acceleration of 0.20 g was recorded.
The tug impacted the right side of the airplane underneath the right front galley door, after jack knifing while remaining attached to the nose gear. The airplane sustained a whole 14.5 inches by 7.5 inches and a fractured stringer.
Probable Cause: The captain initiating a cross bleed start while under tow.
| Statuts: | Accident investigation report completed and information captured |
| Date: | samedi 1 décembre 2018 |
| Heure: | 00:18 |
| Type/Sous-type: |  Bombardier CRJ-200LR |
| Compagnie: | PSA Airlines |
| Immatriculation: | N202PS |
| Numéro de série: | 7858 |
| Année de Fabrication: | 2003 |
| Heures de vol: | 35435 |
| Equipage: | victimes: 0 / Ã bord: 3 |
| Passagers: | victimes: 0 / Ã bord: 24 |
| Total: | victimes: 0 / Ã bord: 27 |
| Dégats de l'appareil: | Substantiels |
| Lieu de l'accident: | New York-La Guardia Airport, NY (LGA) ( Etats-Unis d'Amérique)
|
| Phase de vol: | En attente (STD) |
| Nature: | Transport de Passagers Nat. |
| Aéroport de départ: | New York-La Guardia Airport, NY (LGA/KLGA), Etats-Unis d'Amérique |
| Akron/Canton Regional Airport, OH (CAK/KCAK), Etats-Unis d'Amérique | |
| Numéro de vol: | 5541 |
PSA Airlines flight 5541, a CRJ-200, N202PS, struck a tug during engine start at New York-LaGuardia Airport (LGA). There were no injuries to the 27 passengers and crew onboard. The airplane was substantially damaged.
According to the operator, the accident airplane had six deferred items on the dispatch release including, auxiliary power unit (APU) crossflow, power crossflow shutoff valves (SOV), and the APU. These deferred items rendered the fuel tank transfer on the ground inoperative and required the right engine to be started via an air cart. The flight crew indicated that the tug driver had to use hand signals to communicate back to them because the transmit function on his headset was inoperative. The captain indicated that he had requested to start both engines at the gate to limit fuel imbalance while on the ground, but the ground crew had denied that request. The towing operation was initiated with only the right engine running.Â
A cross-bleed start on the CRJ-200 requires a significant increase in thrust in the operative engine to allow the appropriate amount of bleed pressure to power the air turbine starter and imparts a lateral thrust imbalance on the airplane. A checklist item on the CRJ-200 Engine Start (Cross-Bleed) procedure is to set the parking brake prior to initiating a cross-bleed engine start. However, the captain initiated the cross-bleed start while still under tow after receiving clearance from the ground crew. According to the operator, the flight data indicated the was initiated with the right engine N2 first increasing to approximately 82.5%, and then to maximum N2 about 12 seconds after start was initiated.Â
About ten seconds later, a lateral acceleration of 0.20 g was recorded.
The tug impacted the right side of the airplane underneath the right front galley door, after jack knifing while remaining attached to the nose gear. The airplane sustained a whole 14.5 inches by 7.5 inches and a fractured stringer.
Probable Cause:
Probable Cause: The captain initiating a cross bleed start while under tow.
Accident investigation:
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Photos
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 New York-La Guardia Airport, NY et Akron/Canton Regional Airport, OH est de 632 km (395 miles).
Accident location: Exact; as reported in the official accident report.
La distance entre New York-La Guardia Airport, NY et Akron/Canton Regional Airport, OH est de 632 km (395 miles).
Accident location: Exact; as reported in the official accident report.
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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