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Last updated: 23 October 2017
Statuts:Enquête Officielle
Date:jeudi 14 février 2002
Type/Sous-type:Silhouette image of generic GLF5 model; specific model in this crash may look slightly different
Gulfstream G-V
Compagnie:BB Five Inc.
Immatriculation: N777TY
Numéro de série: 508
Année de Fabrication: 1996
Equipage:victimes: 0 / à bord: 2
Passagers:victimes: 0 / à bord: 0
Total:victimes: 0 / à bord: 2
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:West Palm Beach International Airport, FL (PBI) (   Etats-Unis d'Amérique)
Phase de vol: A l'atterrissage (LDG)
Aéroport de départ:West Palm Beach International Airport, FL (PBI/KPBI), Etats-Unis d'Amérique
Aéroport de destination:Teterboro Airport, NJ (TEB/KTEB), Etats-Unis d'Amérique
Gulfstream V N777TY was flown to West Palm Beach (PBI) to undergo maintenance. The airplane was on jacks, for a tire change, when a mechanic needed access to the airplane's Maintenance Data Acquisition Unit (MDAU) to check out the problem that the airplane was having regarding false over speed warnings. Since the airplane was on jacks the mechanic had to disable the weight-on-wheel (WOW) switches in order to simulate that the WOW was in the ground mode, not in the air mode, and to gain access to the MDAU. The mechanic said he used a "Popsicle stick" to disable these switches. After the maintenance was completed the sticks were not removed, and the inspector that returned the airplane to service was not aware that the WOW switches had been disabled for any reason and no notation was mentioned in the work logs.
The aircraft was to be ferried back to Teterboro and shortly after takeoff the landing gear failed to retract. Despite several attempts the crew did not succeed in raising the gear. They elected to land, to evaluate the situation on the ground, and performed an ILS approach back to runway 27R. Shortly before touchdown the power levers were retarded to idle. At that point the spoilers deployed and the aircraft suddenly and abruptly descended to the runway with a very hard, 4.25 g, landing. The right main gear was pushed through the wing causing spilling of fuel on the runway.

Probable Cause:

PROBABLE CAUSE: "Maintenance personnel's failure to remove wooden sticks from the landing gear weight-on-wheel switches resulting in the airplane remaining in ground mode, and the in flight deployment of the spoilers when the flight crew moved the power levers to idle, during the landing flare, resulting in a hard landing."

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 4 years and 9 months
Accident number: MIA02LA060
Download report: Summary report



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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 West Palm Beach International Airport, FL et Teterboro Airport, NJ est de 1660 km (1037 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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