# NTSB SEA97LA124: Cessna 150H, N50348, Redmond, OR, June 1, 1997 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: May 31, 1997, 18:45 local (Jun 1, 1997, 01:45 UTC) - Place: Redmond, OR - Coordinates: 44.26091, -121.220825 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=44.2609&lon=-121.2208&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report April 24, 1998 - Report: Approved by Office Director - NTSB case key (mKey): 42617 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA97LA124 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/42617/pdf - Page: https://openairdocs.org/ntsb/SEA97LA124 ## Probable cause the pilot's improper decision to depart on a flight without first ensuring the aircraft held sufficient fuel to reach his destination, which resulted in fuel exhaustion. Factors were the high vegetation and rocks at the location of the forced landing. ## Analysis Prior to departing on a flight that the pilot estimated would take 18 to 20 minutes, he measured his fuel remaining by use of a dipstick. Based upon that measurement, he estimated that he had eight gallons of fuel remaining. While on a 45-degree entry to downwind at the destination airport, the aircraft's engine experienced a total loss of power. Although he was not able to make it to a runway, the pilot landed on a level area within the boundary of the airport. His touchdown was successful, but during the landing roll, the aircraft collided with rocks and high vegetation. After the accident, a total of 2.3 gallons of fuel was found in the wing tanks of the aircraft. According to the Owners Manual, 3.3 gallons of the total fuel load is unusable. ## Factual narrative On May 31, 1997, approximately 1845 Pacific daylight time, a Cessna 150H, N50348 impacted the terrain between the runways at Roberts Field, Redmond, Oregon. The private pilot, who was the sole occupant, was not injured, but the aircraft sustained substantial damage. The 14 CFR Part 91 personal pleasure flight, which departed Madras, Oregon about 20 minutes earlier, was being operated in visual meteorological conditions. No flight plan had been filed, and there was no report of an ELT activation. The pilot said that he had measured the fuel with a dipstick prior to leaving Madras, and he estimated that he had about eight gallons of total fuel remaining for the 18 to 20 minute trip. While on a 45 degree entry for the downwind leg at Roberts Field, the aircraft's engine experienced a total power loss. At that time the tower cleared the pilot to land on any runway, but he was unable to maneuver to land on a runway, so he elected to make a forced landing on a level area within the lateral boundary of the airport. The pilot made a successful touchdown, but the aircraft collided with sagebrush and rocks during the landing roll. According to an FAA inspector from Portland FSDO, after the accident, both wing tanks were drained and a total of 2.3 gallons was recovered. According to the Owner's Manual, 3.3 gallons of the total fuel load is unusable. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, approach - fluid,fuel - exhaustion (cause) - planning/decision - improper, pilot in command (cause) - Forced landing, emergency landing - On ground/water encounter with terrain/water, landing - roll - terrain condition - high vegetation (contributing factor) - terrain condition - rock(s)/boulder(s) (contributing factor) ## Aircraft - Registration: [N50348](https://openairdocs.org/deregistered/N50348-2014-06-16), registration cancelled 2014-06-16, S/N 15069245, built 1968 (OpenAirDocs) - Reported make and model: Cessna 150H - Registry model: [Cessna 150H](https://openairdocs.org/model/cessna-150h) (registry code 2071818) (OpenAirDocs) - Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 15069245 - Airframe hours: 7735 - Engines: Continental O-200A 100 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Richard M. Langston - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, May 21, 1997 - Departed: S33, MADRAS, OR - Destination: RDM - Airport: RDM, Roberts Field ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 51; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 100 total, 36 in this make and model, 40 as pilot in command, 20 in the last 90 days, 13 in the last 30 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 290° at 9 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 61 °F, dew point 45 °F - Altimeter: 30.00 inHg - Observed at: RDM ## 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 19970531012239A](https://openairdocs.org/incident/19970531012239A), May 31, 1997: Cessna 150H, Redmond, OR, Substantial damage. Lost power in pattern. Landed on airport but collided with sagebrush and rocks. Only unusable fuel on board. ## Other investigations on N50348 (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 SEA00LA045](https://openairdocs.org/ntsb/SEA00LA045), Feb 18, 2000: Cessna 150H (N50348), Spangle, WA, substantial damage. Probable cause: Exhaustion of the fuel supply due to a leaking fuel tank system. Factors contributing to the accident were, inaccurate fuel quantity sensors, the lack of suitable terrain in the area of the forced… 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.