# NTSB ANC00LA066: Piper PA-18-150, N9739P, Skwentna, AK, June 9, 2000 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 9, 2000, 14:45 local (22:45 UTC) - Place: Skwentna, AK - Coordinates: 61.929092, -151.729248 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=61.9291&lon=-151.7292&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report May 30, 2001 - Report: Approved by Office Director - NTSB office: Alaska Regional Office - NTSB case key (mKey): 50964 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC00LA066 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/50964/pdf - Page: https://openairdocs.org/ntsb/ANC00LA066 ## Probable cause The pilot's improper positioning of the fuel tank selector, and fuel starvation. A factor in the accident was the improper service of the airplane's hydraulic brake system. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(total) - nonmechanical, cruise - fuel tank selector position - improper, pilot in command (cause) - fluid,fuel - starvation (cause) - Forced landing, emergency descent/landing - Nose over, landing - roll - landing gear,normal brake system - improperly serviced (contributing factor) ## Analysis The solo private pilot reported that while in cruise flight, about 200 feet above the ground, all engine power was lost. He said that the fuel selector valve was on the right fuel tank and that he intended to 'run the right tank dry,' then switch tanks. As the engine began to lose power, he switched the selector to the left fuel tank, but engine power was not immediately restored, and he selected a forced landing area on a sandy river bank. He added that during the landing roll, without applying the brakes, the airplane slowly nosed over. The airplane sustained substantial damage to the left wing lift strut, and rudder. The pilot stated that just prior to the accident flight he added hydraulic brake fluid to the brake system. In the pilot's written report he indicated that a postaccident inspection revealed that the main wheels would not rotate. He wrote that when he bled the hydraulic brake system, both air and pressurized hydraulic fluid escaped from the bleed valve. After bleeding the hydraulic system, both wheels operated normally. ## Factual narrative On June 9, 2000, about 1445 Alaska daylight time, a wheel equipped Piper PA-18-150 airplane, N9739P, sustained substantial damage during a forced landing at an off airport site located about 35 miles northwest of Skwentna, Alaska, at 62 degrees, 17 minutes north latitude, 151 degrees, 51 minutes west longitude. The solo certificated private pilot was not injured. The airplane was being operated as a visual flight rules (VFR) personal flight under Title 14, CFR Part 91, when the accident occurred. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originated at Hilltop Airstrip, Chugiak, Alaska, about 1230. During a telephone conversation with the National Transportation Safety Board investigator-in-charge on June 9, the pilot reported that while in cruise flight, about 200 feet above the ground, all engine power was lost. He said that the fuel selector valve was on the right fuel tank and that he intended to "run the right tank dry," then switch tanks. As the engine began to lose power, he switched the selector to the left fuel tank, but engine power was not immediately restored, and he selected a forced landing area on a sandy river bank. He added that during the landing roll, without applying the brakes, the airplane slowly nosed over. The airplane sustained substantial damage to the left wing lift strut, and rudder. The pilot stated that just prior to the accident flight he added hydraulic brake fluid to the brake system. The pilot submitted a written report to the NTSB dated June 23. In his written report, the pilot indicated that a postaccident inspection revealed that the main wheels would not rotate. He wrote that as he bled the hydraulic brake system, both air and pressurized hydraulic fluid escaped from the bleed valve. After bleeding the hydraulic system, both wheels operated normally. ## Aircraft - Registration: N9739P (not matched to a registry record) - Reported make and model: Piper PA-18-150 - Category: Airplane - Serial number: 18-7609010 - Airframe hours: 1992 - Engines: Lycoming O-320-A2B 150 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Michael C. Gardino - Airworthiness certificate: Standard, Normal - Last inspection: Annual, July 9, 1999, 44 hours before - Departed: HILLTOP A/S, AK - Destination: SKW, SKWENTNA, AK ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 59; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: front; flight hours: 2,775 total, 2,500 in this make and model, 2,775 as pilot in command, 35 in the last 90 days, 15 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 360° at 8 knots - Visibility: 60 statute miles - Temperature: 70 °F ## 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 20000609042299A](https://openairdocs.org/incident/20000609042299A), Jun 9, 2000: Piper PA18150, Skwentna, AK, Substantial damage. (-23) On June 9, 2000, about 1445 Alaska daylight time, a wheel-equipped Piper PA-18-150, N9739P, sustaine substantial damage during a forced landing at an off… 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.