# NTSB DEN00LA137: Mooney M20C, N6253U, Longmont, CO, July 22, 2000 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: July 22, 2000, 08:30 local (14:30 UTC) - Place: Longmont, CO - Coordinates: 40.169017, -105.10955 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=40.1690&lon=-105.1095&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report January 18, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 49788 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN00LA137 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/49788/pdf - Page: https://openairdocs.org/ntsb/DEN00LA137 ## Probable cause The pilot's improper fuel tank selector position resulting in fuel starvation and the ditch impacted during the landing roll. A contributing factor was the pilot's failure to follow published procedures and directives. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(total) - nonmechanical, climb - fluid,fuel - starvation - fuel tank selector position - improper, pilot in command (cause) - procedures/directives - not followed, pilot in command (contributing factor) - Forced landing, emergency descent/landing - On ground/water encounter with terrain/water, landing - roll - terrain condition - ditch (cause) ## Analysis After 45 minutes of flight, while conducting touch-and-go landings on a local area personal flight, a total loss of power occurred during climb following a touch-and-go landing. The student pilot attempted to turn back and land the aircraft in the opposite direction on the runway he had departed. He was unable to make it to the runway and landed in a field where the aircraft struck a ditch during landing roll causing substantial damage. The pilot stated the engine quit due to fuel starvation, and investigation verified that the fuel tank selected contained no usable fuel. The aircraft fuel capacity was 75.6 usable gallons and the flight departed with an estimated 25 gallons on board. Review of the pilot's operating handbook for the airplane provided information that the pilot's handbook gave specific preflight and procedural guidance to pilots to verify fuel on board prior to departure and to ensure that critical regimes of flight (landing and takeoff) were conducted on the fullest tank. The student pilot had 65 hours total flight time and 61 hours in the accident aircraft make and model. ## Factual narrative On July 22, 2000, at 0830 mountain daylight time, a Mooney M20C, N6253U, made a forced landing in a field near the airport at Longmont, Colorado, when the engine lost all power. The student pilot and his passenger were not injured and the aircraft sustained substantial damage. Visual meteorological conditions prevailed for this personal flight operating under Title 14 CFR Part 91. The flight originated at Jefferson County Airport, Broomfield, Colorado, at 0745. No flight plan was filed. According to the pilot, he was conducting touch-and-go landings on runway 29 at Vance Brand Municipal Airport. At about 1,000 feet above ground level on climb out following a touch-and-go landing, the engine lost all power. The pilot said he attempted to return for landing on the opposite runway (11), and when he realized he could not make the runway he conducted an off field landing. During landing roll, the nose landing gear struck a ditch. The impact caused damage to the nose landing gear, engine firewall, and right wing. The pilot stated that he did not change the fuel selector to the fullest tank prior to commencing the approach, and the aircraft suffered fuel starvation. Investigation verified that the fuel tank selected was empty of useable fuel. According to the pilot's operating handbook for the aircraft: 1. The accident aircraft make and model has a total fuel capacity of 78.6 U. S. gallons, 75.6 of which is useable fuel. The fuel distribution is in two internal wing tanks that have a capacity of 39.3 gallons each. Fuel consumption is approximately 15.3 gallons per hour at 5,000 feet above mean sea level on a standard day at maximum power. 2. The preflight portion of the handbook provides guidance to the pilot to check the fuel gauges and then visually check each of the two fuel tanks for proper quantity. 3. The operations section of the handbook provides guidance to the pilot to switch the fuel tank selector to the fullest tank prior to commencing an approach. In his report on the accident, the pilot stated he had 25 gallons of fuel on board when he departed Jefferson County Airport 45 minutes prior to the accident. The distribution of that fuel is unknown. According to the pilot, he was issued a private pilot certificate on May 27, 2000, and his medical certificate was a first class, without limitations, issued on June 10, 1998. Federal Aviation Administration records provided information that the pilot had a student pilot certificate issued on September 9, 1999, and that his medical certificate was pending. In the report submitted by the pilot, he stated he had 65.3 hours of flight experience, of which, 61.4 hours was in the accident aircraft make and model. He said he had 25 hours in the previous 90 days and 15 hours in the previous 30 days, all of which was in the accident aircraft make and model. ## Aircraft - Registration: [N6253U](https://openairdocs.org/deregistered/N6253U-2020-05-01), registration cancelled 2020-05-01, S/N 2092, built 1962 (OpenAirDocs) - Reported make and model: Mooney M20C - Registry model: [Mooney M20C](https://openairdocs.org/model/mooney-m20c) (registry code 5870208) (OpenAirDocs) - Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 2092 - Airframe hours: 8358 - Engines: Lycoming O-360 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Advantage Aviation, Inc. - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, May 28, 2000, 56 hours before - Departed: BJC, BROOMFIELD, CO - Airport: 2V2, Vance Brand Municipal, runway 11, 4,800 × 75 ft, concrete ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 28; student; medical: unknown, unknown; seat: left; flight hours: 65 total, 61 in this make and model, 30 as pilot in command, 25 in the last 90 days, 15 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 0° at 4 knots - Visibility: 15 statute miles - Lowest ceiling: none - Temperature: 72 °F, dew point 59 °F - Altimeter: 30.00 inHg - Observed at: BJC, 30 nm away ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20000722012889A](https://openairdocs.org/incident/20000722012889A), Jul 22, 2000: Mooney M20C, Longmont, CO, No damage. (-23) Mooney M20C, N6253U departed Longmont airport (2V2) Longmont, CO using runway 29 approximately 827 MDT, 7-22-00, after the 2nd touch & go, take… ## Other investigations on N6253U (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB DEN99LA112](https://openairdocs.org/ntsb/DEN99LA112), Jul 3, 1999: Mooney M20C (N6253U), Big Piney, WY, substantial damage. Probable cause: The pilot's failure to maintain directional control of the aircraft during landing touchdown. A related factor was the gusty crosswind. From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.