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Last updated: 8 December 2021
Datum:Dienstag 23 Dezember 2003
Flugzeugtyp:Silhouette image of generic LJ24 model; specific model in this crash may look slightly different
Learjet 24B
Kennzeichen: N600XJ
Werknummer: 24-190
Baujahr: 1969
Triebwerk: 2 General Electric CJ610
Besatzung:Todesopfer: 2 / Insassen: 2
Fluggäste:Todesopfer: 0 / Insassen: 0
Gesamt:Todesopfer: 2 / Insassen: 2
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:5 km (3.1 Meilen) SE of Helendale, CA (   USA)
Flugphase: Während des Fluges (ENR)
Flug von:Chino Airport, CA (CNO/KCNO), USA
Flug nach:Hailey-Sun Valley Airport, ID (SUN/KSUN), USA
Learjet 24B N600XJ departed Chino (CNO) at 08:58 and was cleared to climb to an altitude of 29,000 feet. About 09:09, after the airplane climbed through an altitude of 26,000 feet, the first officer requested a return to Chino. The controller asked if he needed to declare an emergency, and the first officer replied that he did not. The controller then directed the flight crew to maintain an altitude of 24,000 feet. As the flight was cleared directly to HECTOR, the airplane descended below the assigned altitude, at a rate of about 6,500 fpm. About 09:11:24, while the airplane was descending at a rate of about 10,000 fpm, the first officer stated, "we're declaring an emergency now." This was the last contact with the flight. The airplane impacted the top of a ridgeline in desert terrain at an elevation of 3,350 feet.

Probable Cause:

PROBABLE CAUSE: "A loss of airplane control for undetermined reasons."

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 2 years and 5 months
Accident number: NTSB AAB-06-04
Download report: Final report



photo of Learjet-24B-N600XJ
accident date: 23-12-2003
type: Learjet 24B
registration: N600XJ
photo of Learjet-24B-N600XJ
accident date: 23-12-2003
type: Learjet 24B
registration: N600XJ
photo of Learjet-24B-N600XJ

This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Chino Airport, CA to Hailey-Sun Valley Airport, ID as the crow flies is 1091 km (682 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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