NTSB CAROL · Event
Event LAX04LA269
Registry · N16TN
FAA Aircraft Registry record.
Make / Model
ALEXANDER SCHLEICHER GMBH & CO ASK 21 MI
Year of manufacture
2014
TCDS
G47EU · ALEXANDER SCHLEICHER GMBH & CO
Engine
AUSTRO IAE 50R-AA (56 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
20240411
ADS-B equipped
Yes — Mode-S A0F10B
Registrant of record
MCKNIGHT THOMAS N
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's misjudgment of the airplane's distance/speed during a precautionary landing, which resulted in the airplane overrunning the runway. Contributing factors were failure of an oil line, and the fence.
Factual narrative
On July 16, 2004, at 1658 Pacific daylight time, an experimental amateur-built Newell RV-6A airplane, N16TN, overran the runway and impacted a perimeter fence during a precautionary landing at the Reid Hillview Airport of Santa Clara County (RHV), San Jose, California. The airplane was registered to, and operated by, the pilot under the provisions of 14 CFR Part 91 as a personal flight. The private pilot and passenger were not injured. The airplane was substantially damaged. Visual meteorological conditions prevailed and a flight plan was not filed for the cross-country flight. The flight originated from San Luis Obispo, California, approximately one hour prior to the accident, and was destined for Hayward, California. During a telephone interview conducted by the National Transportation Safety Board investigator-in-charge, the pilot said the airplane was in cruise flight over RHV when he noticed the oil pressure gauge was reading low and was getting lower. He monitored the oil temperature gauge and noticed it was indicating a higher than normal temperature. The pilot concluded he was losing, or had lost, engine oil, and elected to declare an emergency and conduct a precautionary landing at RHV. During landing, the pilot said he "landed long," and could not stop the airplane prior to overrunning the end of runway 31R (3,101 feet long). The airplane impacted an airport perimeter fence and came to rest upright. The pilot reported the airplane sustained structural damage to the wings, along with damage to the nose landing gear and the propeller. He examined the engine following the accident and noticed the oil line (from the oil cooler to the engine) had a "big leak." The pilot reported the engine's previous performance was "excellent," and he did not notice any abnormal oil consumption rates. The airplane was stored in a hangar and he never noticed any oil on the hangar floor prior to the accident. According to the pilot, the airplane accumulated a total of 598.2 hours of flight time. The last inspection of the airplane was conducted on May 13, 2004, 16.6 hours prior to the accident. In the Pilot/Operator Aircraft Accident Report (NTSB form 6120.1/2), under the section titled, "How Could This Accident Have Been Prevented", the pilot indicated that the use of aircraft certified hoses could have helped prevent the failure of the oil line. The pilot noted that amateur-built airplanes do not require the use of FAA certified parts. The airplane impacted an airport perimeter fence after the pilot landed long during a precautionary landing. The airplane was in cruise flight when the pilot noticed a loss of oil pressure and an increase in oil temperature. He assumed the engine was losing or had lost its oil and elected to make a precautionary landing at a nearby airport. The pilot reported he landed long and could not stop the airplane prior to the end of the 3,101-foot runway. Post-accident examination of the airplane revealed the oil line, from the oil cooler to the engine, failed. The pilot indicated the line was not an aircraft quality line. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2004_LAX04LA269.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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