# NTSB SEA05CA174: Navion Navion G, N1622T, Port Orchard, WA, August 13, 2005 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: August 12, 2005, 18:00 local (Aug 13, 2005, 01:00 UTC) - Place: Port Orchard, WA - Coordinates: 47.43222, -122.667778 - Nearby events: https://openairdocs.org/map.md?lat=47.4322&lon=-122.6678&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report October 27, 2005 - Report: Approved by Office Director - NTSB case key (mKey): 62267 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA05CA174 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/62267/pdf - Page: https://openairdocs.org/ntsb/SEA05CA174 ## Probable cause The pilot's delay in aborting the takeoff which resulted in a runway overrun. A contributing factor was the pilot's failure to raise the flaps prior to takeoff. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Overrun, takeoff - aborted - raising of flaps - not performed, pilot in command (contributing factor) - aborted takeoff - delayed, pilot in command (cause) - On ground/water collision with object, landing - roll - object - fence ## Analysis According to the pilot, after he performed a pre-flight inspection of the airplane, he started it and taxied it out of the hangar. The passenger boarded the airplane after closing and locking the hangar doors. The pilot stated that his normal practice was to retract the flaps upon engine start. However, in this case, he intentionally kept the flaps down after engine start in order to allow the passenger to use the steps in the flap to board the airplane. Checking the flap setting before takeoff was not on his checklist, and he did not raise the flaps prior to takeoff. During the takeoff roll, the pilot "noticed the aircraft wanting to rotate prematurely" and held the nose down until he obtained an airspeed of 70 mph. When he rotated, he found the yoke was "heavy," and the airplane "was not gaining airspeed or much altitude." At midfield with an airspeed of approximately 80 mph and an altitude of approximately 50 feet, he elected to abort the takeoff. After touching down, he "didn't have much runway left." The pilot applied the brakes. However, the airplane departed the runway, and the right wing struck a chain link fence. ## Factual narrative On August 12, 2005, at 1800 Pacific daylight time, a Navion G airplane, N1622T, sustained substantial damage when it overran the runway and struck a fence during an aborted takeoff. The private pilot and his passenger were not injured. The airplane was registered to and operated by the pilot. Visual meteorological conditions prevailed and no flight plan was filed for the 14 CFR Part 91 personal local flight. The flight was originating when the accident occurred. According to the pilot, after he performed a pre-flight inspection of the airplane, he started it and taxied it out of the hangar. The passenger boarded the airplane after closing and locking the hangar doors. The pilot stated that his normal practice was to retract the flaps upon engine start. However, in this case, he intentionally kept the flaps down after engine start in order to allow the passenger to use the steps in the flap to board the airplane. Checking the flap setting before takeoff was not on his checklist, and he did not raise the flaps prior to takeoff. During the takeoff roll, the pilot "noticed the aircraft wanting to rotate prematurely" and held the nose down until he obtained an airspeed of 70 mph. When he rotated, he found the yoke was "heavy," and the airplane "was not gaining airspeed or much altitude." At midfield with an airspeed of approximately 80 mph and an altitude of approximately 50 feet, he elected to abort the takeoff. After touching down, he "didn't have much runway left." The pilot applied the brakes. However, the airplane departed the runway, and the right wing struck a chain link fence. A small fire started at the right tip tank, which was quickly extinguished by a witness. According to the pilot, the right tip tank was damaged beyond repair. Additionally, approximately 10 inches of the right wing leading edge were crushed, and there were tears in the lower wing skin beneath the impact area. ## Aircraft - Registration: [N1622T](https://openairdocs.org/aircraft/N1622T), registered now, S/N NAV-4-2468, built 1962 (OpenAirDocs) - Reported make and model: Navion Navion G - Registry model: [Navion NAVION G](https://openairdocs.org/model/navion-navion-g) (registry code 6150120) (OpenAirDocs) - Registry engine: [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series) (registry code 17027, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: NAV-4-2468 - Engines: Continental IO-520-B reciprocating - Damage: Substantial damage - Fire: On-Ground - Flight: Personal, Part 91 - Registered owner: David J. Roskoph - Airworthiness certificate: Standard, Normal - Departed: 4WA9, Port Orchard, WA - Airport: 4WA9, Port Orchard, runway 36 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 45; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 1; flight hours: 394 total, 48 in this make and model, 4 in the last 90 days, 4 in the last 30 days ## Weather - Conditions: Visual (VMC), Day ## 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 20050812016509A](https://openairdocs.org/incident/20050812016509A), Aug 12, 2005: Tmpson NAVIONG, Port Orchard, WA, Substantial damage. (-23) Preliminary noticed indicated on takeoff was unable to develop power, aborted takeoff aircraft ran off runway and into airport perimeter fence damage to… ## Other investigations on N1622T (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 UNK64X3646](https://openairdocs.org/ntsb/UNK64X3646), Aug 28, 1964: Navion G (N1622T), Rushville, IN, substantial damage 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.