Accident Cessna 150F N8092S,
ASN logo
ASN Wikibase Occurrence # 35445
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information. If you feel this information is incomplete or incorrect, you can submit corrected information.

Date:Thursday 30 September 1999
Time:22:40 LT
Type:Silhouette image of generic C150 model; specific model in this crash may look slightly different    
Cessna 150F
Owner/operator:Robert J. Haggerty
Registration: N8092S
MSN: 15061692
Year of manufacture:1965
Total airframe hrs:3512 hours
Engine model:Continental O-200-A
Fatalities:Fatalities: 1 / Occupants: 2
Aircraft damage: Substantial
Location:Poteau, OK -   United States of America
Phase: En route
Departure airport:Henryetta, OK (F10)
Destination airport:(KRKR)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The student pilot planned the night cross-country flight; however, the flight instructor performed the fuel calculations by using a 4-hour fuel endurance minus the student's flight time to the origination airport. The instructor determined that there was enough fuel for the flight and elected not to have the fuel tanks filled prior to the flight. During the first leg of the flight, the generator warning light illuminated. The student indicated to the instructor that he thought it was an indication problem and not a generator problem. The instructor and student elected to continue the flight, performing touch-and-go landings at two separate airports. On the third/last leg of the flight, after the instructor noticed the fuel gauges reading empty in one fuel tank and 1/4 full in the other, the student informed the instructor that his airplane only had a 3.5-hour fuel endurance. During the last leg of the flight, the electrical system failed. Due to the low fuel status, the instructor did not divert to an airport with automatic runway lighting, but continued to the original destination airport, which had a pilot controlled runway light system. The instructor attempted two approaches with no runway or aircraft lighting. On the second approach, the airplane impacted the ground and a ditch. A work order included in the maintenance records indicated that the generator 'fuses' were 'replaced' 2.5 months prior to the accident. Examination of the electrical system revealed that a 30-amp fuse was installed in the generator fuse holder, and the fuse had 'blown.' The aircraft's electrical system required a 35-amp generator fuse.

Probable Cause: The instructor pilot's inadequate in-flight decision making, which resulted in the continued flight with a disabled generator and subsequent total failure of the electrical system. Factors were the installation of the inadequate generator fuse by unknown person(s), the instructor's failure to refuel the airplane prior to the flight, and the dark night conditions.

Accident investigation:
Investigating agency: NTSB
Report number: FTW99LA272
Status: Investigation completed
Duration: 1 year and 2 months
Download report: Final report




Revision history:

24-Oct-2008 10:30 ASN archive Added
21-Dec-2016 19:22 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
14-Dec-2017 09:02 ASN Update Bot Updated [Operator, Destination airport, Source, Narrative]
07-Apr-2024 17:32 ASN Update Bot Updated [Time, Operator, Other fatalities, Phase, Destination airport, Source, Narrative, Category, Accident report]

Corrections or additions? ... Edit this accident description

The Aviation Safety Network is an exclusive service provided by:
Quick Links:

CONNECT WITH US: FSF on social media FSF Facebook FSF Twitter FSF Youtube FSF LinkedIn FSF Instagram

©2024 Flight Safety Foundation

1920 Ballenger Av, 4th Fl.
Alexandria, Virginia 22314