# NTSB SEA99LA088: Ryan Navion B, N870DR, Klamath Falls, OR, June 17, 1999 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 17, 1999, 15:34 local (22:34 UTC) - Place: Klamath Falls, OR - Coordinates: 42.310104, -122.070068 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.3101&lon=-122.0701&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report August 3, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 46613 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA99LA088 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/46613/pdf - Page: https://openairdocs.org/ntsb/SEA99LA088 ## Probable cause The pilot's failure to reinstall the engine oil filler cap during preflight, resulting in engine oil loss and the necessity for an immediate landing. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Gear collapsed, emergency landing after takeoff - lubricating system,oil filler cap - not installed (cause) - aircraft preflight - inadequate, pilot in command (cause) - fluid,oil - loss,partial - precautionary landing - attempted, pilot in command ## Analysis The pilot added 1 quart of oil to the engine during preflight, but forgot to replace the oil filler cap. Immediately after takeoff from runway 14, the pilot noted oil on the top of the engine cowling and the windscreen. The pilot then requested an immediate return and was cleared to land on any runway. The pilot made a '60 [degree] left turn to runway 25' and attempted a landing with the 'engine...running roughly', but he stated that 'due to altitude' he was unable to make it back to the runway. The aircraft landed at about a 45-degree angle just to the north side of the runway in the dirt area. The landing was sufficiently hard to punch the right main landing gear through the top of the right wing. ## Factual narrative On June 17, 1999, approximately 1534 Pacific daylight time, a Ryan Navion B, N870DR, was substantially damaged in an off-runway landing at Klamath Falls International Airport, Klamath Falls, Oregon, after the pilot noted oil coming from the engine area after takeoff and turned back to the airport. The private pilot-in-command of the aircraft, who was its sole occupant, was not injured in the accident. Visual meteorological conditions were reported at Klamath Falls at 1553, and no flight plan had been filed for the 14 CFR 91 personal flight to Vacaville, California. The pilot reported that he put 1 quart of oil into the engine during his preflight, but that he forgot to replace the oil filler cap. He stated he then accomplished a normal engine start, taxi to runway 14, and preflight engine runup, then took off from runway 14. He reported that at about 600 feet above ground level, he observed oil on top of the engine cowling and on the windshield. He stated he requested an immediate return and lowered the landing gear, and was cleared by the tower to land on any runway. He stated he immediately made a "60 [degree] left turn to runway 25", and that the engine was running roughly at that point. He reported that "due to altitude", he was unable to make it back to the runway, and that the aircraft landed hard at about a 45-degree angle to the runway, just to the north side of the runway in the dirt area. During the landing, the aircraft's right main gear punched through the top of the right wing, and the bottom of the left wing was also wrinkled. The pilot reported that no mechanical failure or malfunction was involved in the accident, stating on his NTSB accident report: "Cause of accident was pilot's incomplete preflight, leaving oil filler cap off. This action precipitated the hard emergency landing [and] damage to [the aircraft]." ## Aircraft - Registration: [N870DR](https://openairdocs.org/aircraft/N870DR), registered now, S/N NAV-4-2190B (OpenAirDocs) - Reported make and model: Ryan NAVION B - Registry model: [Ryan NAVION B](https://openairdocs.org/model/ryan-navion-b) (registry code 6150170) (OpenAirDocs) - Registry engine: [Lycoming GO-435C&D series](https://openairdocs.org/engine/lycoming-go-435c-d-series) (registry code 41521, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: NAV-4-2190-B - Airframe hours: 3766 - Engines: Lycoming GO-480-G2D6 295 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Robert Douglas White - Airworthiness certificate: Standard, Normal - Last inspection: Annual, September 15, 1998, 5 hours before - Departed: LMT - Destination: VCB, VACAVILLE, CA - Airport: LMT, Klamath Falls Intl, runway 25, 4,972 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 57; private; airplane ratings: single-engine land; medical: class 3, unknown; seat: left; flight hours: 736 total, 351 in this make and model, 636 as pilot in command, 2 in the last 90 days, 2 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 250° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: 25,000 ft broken - Temperature: 82 °F, dew point 43 °F - Altimeter: 29.00 inHg - Observed at: LMT ## 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 19990617007159A](https://openairdocs.org/incident/19990617007159A), Jun 17, 1999: Tmpson NAVIONB, Klamath Falls, OR, Substantial damage. Acft oil cap came loose on take-off, the acft temperature began rising, the pilot started to return to the arpt and made an emergency landing on the side of… 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.