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Accidents · NTSB LAX98LA187 · Final report

Cessna 152 accident near Descanso, California, June 7, 1998

On June 7, 1998 at about 9:50 pm local time, a Cessna 152, registered N5343M, was destroyed in an accident near Descanso, California. It was an instructional flight under general aviation rules (Part 91). 2 people were seriously injured. The weather was conditions the NTSB did not record.

The NTSB's probable cause their words, unchanged

the certified flight instructor's disregard of the weather briefings and forecasted en route weather conditions, and, his failure to maintain adequate altitude/clearance in mountainous terrain. Contributing to the accident were instrument meteorological conditions and mountainous terrain.

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

What the record shows

Date
June 7, 1998 · about 9:50 pm local time
Place
Descanso, California · map
Type
Accident
Injuries
2 people were seriously injured.
Weather
conditions the NTSB did not record
Aircraft
Cessna 152 · all 152s on the register
Registration
N5343M · no longer on the register · serial 15284547
Damage
Destroyed
Flight
Instructional flight · general aviation rules (Part 91)

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

The purpose of the flight was to conduct the cross-country portion of the student's flight training to obtain a private pilot certificate. A coastal mountain range bisected the course between the takeoff airport, which was under the influence of cloud layers, and the destination airport, which was in clear weather conditions. Both the certified flight instructor (CFI) and student received three separate weather briefings stating that visual flight rules flight was not recommended along the intended route of flight due to mountain obscuration and moderate turbulence. As the flight proceeded into mountainous terrain, the flight encountered clouds that were merging with higher terrain and the CFI elected to turn around. The CFI said that half way through the 180-degree turn, they were struck by a strong downdraft that pushed the aircraft into the ground. A witness to the accident stated that he saw the airplane at 150 feet above ground level as it came out of the clouds executing a left turn, and then saw it abruptly descend and impact trees and terrain. The witness also said that there were strong gusty wind conditions present at the accident site. No discrepancies were found during an examination of the engine or airframe. A meteorological study was conducted that substantiated the National Weather Service forecast in effect at the time of the accident.

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

Pilot

  • Certificate: airline transport pilot, flight instructor
  • Ratings: multi-engine land; single-engine land; instructor: airplane multi-engine; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane
  • Flight time: 10,000 hours in all; 1,000 in this make and model; 200 in the last 90 days; 70 in the last 30 days; 10,000 as pilot in command; 7,000 on instruments
  • Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
  • Seat: rgt

The aircraft

  • Airframe total time: 8,568 hours
  • Last inspection: annual inspection, March 31, 1998; 45 hours since
  • Maximum gross weight: 1,670 lb
  • Seats: 2
  • Landing gear: fixed
  • Engine: Lycoming O-235-L2C (piston); 0 hours total
  • Fire on the ground

The flight

  • Departed from: MYF San Diego CA at 9:00 pm
  • Destination: IPL Imperial CA
  • Flight plan: none
  • Runway 0
  • A second pilot was aboard

Weather at the time

  • Light: daylight
  • Wind: from 230° at 8 knots
  • Visibility: 20 statute miles
  • Sky: broken clouds at 3,000 ft; scat at 2,500 ft
  • Temperature: 66°F (19°C), dew point 0°F (-18°C)
  • Altimeter: 29.00 inHg
  • Observation at 9:47 pm from SEE, 21 miles away

Injuries

FatalSeriousMinorNone
Crew2

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

The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.

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.