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Last updated: 24 September 2021
Statuts:Enquête Officielle
Date:samedi 19 avril 2008
Heure:10:10
Type/Sous-type:Silhouette image of generic C510 model; specific model in this crash may look slightly different
Cessna 510 Citation Mustang
Compagnie:California Natural Products
Immatriculation: N54PV
Numéro de série: 510-0028
Année de Fabrication: 2007
Heures de vol:120
Moteurs: 2 Pratt & Whitney Canada PW615F/A
Equipage:victimes: 0 / à bord: 1
Passagers:victimes: 0 / à bord: 3
Total:victimes: 0 / à bord: 4
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:Carlsbad-McClellan-Palomar Airport, CA (CLD) (   Etats-Unis d'Amérique)
Phase de vol: A l'atterrissage (LDG)
Nature:Privé
Aéroport de départ:Lincoln Regional Karl Harder Field, CA (KLHM), Etats-Unis d'Amérique
Aéroport de destination:Carlsbad-McClellan-Palomar Airport, CA (CLD/KCRQ), Etats-Unis d'Amérique
Détails:
A Cessna 510 Citation Mustang, N54PV, sustained substantial damage following the pilot's intentional ground loop maneuver during the landing roll on runway 24 at Carlsbad-McClellan-Palomar Airport, California, USA. The commercial pilot and three passengers were not injured. The personal flight departed from Lincoln Regional Airport, California, about 08:54, with a planned destination of Carlsbad. At the time of the accident, the pilot had canceled his instrument flight rules (IFR) flight plan, and was executing a visual flight rules (VFR) approach to runway 24 in visual meteorological conditions.
As the airplane approached the destination airport, the pilot selected vertical speed mode on the autopilot. While descending, the copilot's Primary Flight Display (PFD) began to flicker. About 5 minutes later, as the airplane transitioned through 28,000 feet mean sea level, the left PFD flashed a "PFT" alert indicating that the autopilot had disconnected. The pilot said he immediately felt heavy control forces on the control yoke that he had to exert to fly the airplane. Shortly thereafter, the pilot discovered that the electric pitch trim was not operational. While hand-flying the airplane the pilot entered instrument meteorological conditions as the airplane descended through a 2,400-foot-thick cloud layer. Thereafter, the pilot continued a visual approach to the 4,897-foot-long runway. The pilot noted that he was overwhelmed with the electrical failures and fatigued from maneuvering the airplane by hand for such a long duration (which he approximated was around 45 minutes). The airplane crossed the runway threshold about 15 knots faster than the correct landing speed and the airplane touched down past the midpoint of the runway. The pilot realized that despite his braking attempts the airplane was going to continue off the runway surface over a small downsloping cliff at the end. He determined that he would not be able to abort the landing due to the airplane's diminished ground speed and elected to perform a 180-degree turn. The airplane ground looped, coming to rest in a dirt area south of the runway; the main landing gear collapsed and the flaps folded under the wings. According to the pilot, he never attempted to reset the autopilot system. The autopilot was designed for an automatic disengagement when there is a system failure, invalid sensor data, or yaw damper failure. On the manufacturer's current Pilots' Abbreviated Checklist, Emergency Procedures section, it states that if the autopilot preflight test fail warning (red "PFT" warning on the PFD) illuminates, the pilot should reset the associated circuit breaker to clear the fault. A post-accident examination of the airplane's systems revealed no mechanical malfunctions or failures, with the exception of a flickering PFD screen.

Probable Cause:

PROBABLE CAUSE: "The pilot's misjudgment of speed and distance, resulting in an overshoot of the runway. Contributing to the accident was the pilot's failure to follow the Autopilot Preflight Test Fail checklist and his distraction with a flickering primary flight display screen."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 11 months
Accident number: LAX08FA117
Download report: Final report


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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 Lincoln Regional Karl Harder Field, CA et Carlsbad-McClellan-Palomar Airport, CA est de 735 km (459 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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