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Last updated: 30 November 2021
Statuts:Enquête Officielle
Date:mercredi 17 novembre 2010
Heure:15:53
Type/Sous-type:Silhouette image of generic LJ25 model; specific model in this crash may look slightly different
Learjet 25B
Compagnie:Premier Jets
Immatriculation: N25PJ
Numéro de série: 25-111
Année de Fabrication: 1973
Heures de vol:8453
Moteurs: 2 General Electric CJ610-6
Equipage:victimes: 0 / à bord: 2
Passagers:victimes: 0 / à bord: 0
Total:victimes: 0 / à bord: 2
Dégats de l'appareil: Substantiels
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Portland-Hillsboro Airport, OR (HIO) (   Etats-Unis d'Amérique)
Phase de vol: A l'atterrissage (LDG)
Nature:Convoyage
Aéroport de départ:Boise Air Terminal, ID (BOI/KBOI), Etats-Unis d'Amérique
Aéroport de destination:Portland-Hillsboro Airport, OR (HIO/KHIO), Etats-Unis d'Amérique
Détails:
A Learjet 25B corporate jet, N25PJ, experienced separation of its nose gear assembly upon impacting terrain during a landing overrun accident at the Portland-Hillsboro Airport, OR (HIO). The airplane was substantially damaged. Neither the airline transport certificated pilot-in-command (PIC) nor the commercial licensed second-in-command (SIC) was injured. Instrument meteorological conditions prevailed at the time of the positioning flight from Boise Air Terminal, ID (BOI).
The airplane landed on runway 30. The PIC reported that he extended the wings' spoilers immediately after touchdown. He tested the brakes and normal brake pedal pressure was noted. However, during rollout he noted a lack of deceleration and more brake pressure was applied, with no discernable deceleration. The airplane's optional thrust reversers were not used; they had been previously rendered non-operational by company maintenance personnel and were therefore not functional.
According to the PIC, he continued applying brake pedal pressure, and when the airplane was about 2,000 feet from the runway's end, it was still traveling about 100 knots. As the airplane rolled off the departure end on runway 30, which was wet, both pilots estimated that it was still travelling between 85 and 90 knots.
Runway 12/30 is 6,600 feet long by 150 feet wide. It has an asphalt non-grooved surface. Airport management reported that its surface condition was "good."

Probable Cause:

PROBABLE CAUSE: "The failure of the flight crew to stop the airplane on the runway due to the flying pilot’s failure to attain the proper touchdown point. Contributing to the accident was an anti-skid system that was not performing optimally, which allowed the airplane to encounter reverted rubber hydroplaning, and the company-developed quick reference landing distance chart that did not provide correction factors related to tailwind conditions."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 2 years and 4 months
Accident number: WPR11FA052
Download report: Summary report

Sources:
» NTSB


Photos

photo of Learjet-25B-N25PJ
accident date: 17-11-2010
type: Learjet 25B
registration: N25PJ
photo of Learjet-25B-N25PJ
accident date: 17-11-2010
type: Learjet 25B
registration: N25PJ
photo of Learjet-25B-N25PJ
accident date: 17-11-2010
type: Learjet 25B
registration: N25PJ
photo of Learjet-25B-N25PJ
accident date: 17-11-2010
type: Learjet 25B
registration: N25PJ
 

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 Boise Air Terminal, ID et Portland-Hillsboro Airport, OR est de 572 km (358 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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