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Accidents · NTSB WPR15FA227 · Final report

Cessna P337G accident near Santa Paula, California, August 1, 2015

On August 1, 2015 at about 4:05 pm local time, a 1972 Cessna P337G, registered N4CU, was substantially damaged in an accident during enroute near Santa Paula, California (Santa Paula airport). It was a personal flight under general aviation rules (Part 91). 1 person was killed. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

The noninstrument-rated pilot's decision to conduct a visual flight in instrument meteorological conditions, which resulted in controlled flight into mountainous terrain.

Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.

What the record shows

Date
August 1, 2015 · about 4:05 pm local time
Place
Santa Paula, California · Santa Paula · map
Type
Accident
Injuries
1 person was killed.
Weather
visual conditions (good weather)
Aircraft
Cessna P337G, built 1972 · all P337Gs on the register
Registration
N4CU · no longer on the register · serial P3370065
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

The NTSB's narrative final · quoted from the NTSB record

The noninstrument-rated commercial pilot departed for the cross-country flight over mountainous terrain in instrument meteorological conditions. A witness observed the airplane take off from runway 22, disappear into an overcast layer at 300 ft above ground level (about 550 ft mean sea level [msl]), and then reappear heading in the opposite direction. The witness reported that the airplane departed the traffic pattern heading northeast. The wreckage was located in mountainous terrain at an elevation of 1,223 ft msl, 2.8 mi east of the departure airport. Meteorological data indicated that, at the time of the accident, a cloud layer extended over the accident site from about 550 ft msl to about 2,100 ft msl, and, at the elevation of the accident site, the terrain would have been obscured by clouds. Examination of the wreckage did not reveal evidence of any preimpact mechanical malfunctions or anomalies that would have precluded normal operation of the airframe or engine. The orientation of the wreckage indicated that, at impact, the airplane was heading south and traveling at a ground speed consistent with normal traffic pattern speeds. The damage to the airplane was consistent with controlled flight into the terrain, and the airplane's impact heading was consistent with the pilot attempting to return to the airport when the airplane collided with the rising terrain.

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.

The factual record from the NTSB's investigation tables, in plain English

What happened, in order

  1. VFR encounter with IMC during enroute
  2. Controlled flight into terrain or object (CFIT) during enroute defining event

The NTSB's findings

  • cause Environmental issues › Conditions/weather/phenomena › Ceiling/visibility/precip › Below VFR minima › Effect on personnel
  • cause Personnel issues › Action/decision › Info processing/decision › Decision making/judgment › Pilot
  • cause Environmental issues › Physical environment › Terrain › Mountainous/hilly terrain › Contributed to outcome

Pilot

  • Certificate: commercial pilot
  • Ratings: multi-engine land; single-engine land; single-engine sea
  • Flight time: 3,290 hours in all
  • Medical certificate: Class 3 (with waivers/limitations)
  • Seat: left
  • Injury: fatal

The aircraft

  • Airframe total time: 2,246.7 hours
  • Last inspection: 100-hour inspection, July 31, 2015; 0 hours since
  • Maximum gross weight: 4,630 lb
  • Seats: 6
  • Landing gear: retractable
  • Engine 1: Rolls Royce TSIO-360DG (piston); 922 hours total
  • Engine 2: Continental Motors TSIO-360C(5B) (piston); 1,403 hours total

The flight

  • Departed from: KSZP Santa Paula CA at 4:00 pm
  • Destination: KL71 California City CA
  • Flight plan: none
  • Runway 22, 2,713 ft by 60 ft

Weather at the time

  • Light: daylight
  • Visibility: 5 statute miles
  • Sky: overcast at 7 ft; clear
  • Temperature: 70°F (21°C), dew point 64°F (18°C)
  • Altimeter: 29.98 inHg
  • Observation at 3:55 pm from KCMA, 10 miles away

Injuries

FatalSeriousMinorNone
Flight crew1

Documents from the investigation the NTSB's docket: the evidence folder behind the report

9 documents, released by the NTSB on November 15, 2016. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.

The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.

Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.