- Date
- July 12, 2004, 17:30 local (Jul 13, 2004, 00:30 UTC)
- Place
- Santa Clarita, CA
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N3837HErcoupe 415-D
- Weather
- Visual (VMC) · Day
- Status
- Completed · report June 8, 2005
- Report
- Approved by Office Director
- Parties
- Federal Aviation Administration
- FAA report
- 20040712021809A
- Case key
- 59663
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
the pilot's inadequate planning/decision by his inadequate evaluation of the weather resulting in an attempt to conduct flight beyond the aircraft's climb performance capability.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
The pilot made a precautionary landing in a field and the airplane collided with a rock. When he departed, the ambient temperature was about 80 degrees F. As he progressed northbound while climbing toward mountainous terrain, the temperatures exceeded 100 degrees F. When the airplane was about 2,500 feet msl, it would not climb and the engine temperature gauge was indicating 240 degrees F. The pilot attempted to return to a nearby airport; however, he could not attain the altitude needed to transition through a mountain pass to the airport. He made a precautionary landing in a field. A Federal Aviation Administration inspector performed a post accident test-run on the engine, and it operated normally. The density altitude at the accident site was calculated to be in excess of 5,300 feet.
Factual narrative
On July 12, 2004, at 1730 Pacific daylight time, an Ercoupe 415-D, N3837H, collided with a rock during a precautionary landing to a field in Santa Clarita, California. The private pilot, also the registered owner, was operating the airplane under the provisions of 14 CFR Part 91. The pilot, the sole occupant, was not injured. The airplane sustained substantial damage. Visual meteorological conditions prevailed for the flight, and no flight plan had been filed. The airplane departed about 1630 from the Santa Monica Municipal Airport, Santa Monica, California, and was destined for Modesto City County-Harry Sham Field, Modesto, California.
According to the pilot, after departure from Santa Monica, he climbed to 1,800 feet mean sea level (msl), which he maintained while crossing through the Van Nuys, California, airspace. As he began his climb northbound, he encountered turbulence. Approximately 2,500 feet msl, the airplane was not climbing and the oil temperature gauge was indicating 220 degrees Fahrenheit (F).
The pilot elected to reverse course and return to Whiteman Airport, Pacoima, California; however, during the turn he lost altitude and the airplane would not climb. Assuming that he would not be able to attain the altitude needed to transition through the Newhall Pass, the pilot made a precautionary landing in a field. During the landing roll, the left main landing gear collided with a rock and sheared off, resulting in substantial damage to the main spar. The pilot manually shutdown the engine after the landing.
The pilot stated that his engine was running normally, but the temperature was warmer than he expected after his departure. When he departed, the temperature was about 80 degrees F; as he progressed northward, the temperatures exceeded 100 degrees F.
Post accident examination and a test-run by a Federal Aviation Administration inspector did not reveal any operating anomalies with the engine. The inspector did note that the air filter was dirty.
The density altitude at the accident site was calculated to be in excess of 5,300 feet.
Aircraft
- Registration
- N3837H
- Reported as
- Ercoupe 415-D
- Category
- Airplane
- Serial number
- 4538
- Airframe hours
- 2,750
- Engine
- Continental C-85, 85 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Eugene Evans
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · July 1, 2003
- Departed
- SMO · Santa Monica, CA
- Destination
- MOD · Modesto, CA
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 70
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--no waivers/lim.
- Last flight review
- August 15, 2003
- Seat
- Left
- Flight hours
- 900 total
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 270° at 8 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 93 °F, dew point 27 °F
- Altimeter
- 29.98 inHg
- Observed at
- PMD, 30 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.