SEA93LA036

NTSB accident investigation · Piper PA-46 · Twin Falls, ID · December 12, 1992

Accident · Minor injuriesLimited investigationFinal report
Date
December 11, 1992, 18:58 local (Dec 12, 1992, 01:58 UTC)
Place
Twin Falls, ID
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N856MPiper PA-46
Weather
Instrument (IMC) · Night/dark
Status
Completed · report May 26, 1993
Report
Approved by Office Director
FAA report
19921211049939A
Case key
42968

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 failure to maintain the ILS glide path.

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.

In flight collision with terrain/waterApproach - faf/outer marker to threshold (ifr)
Proper glidepath - not maintainedPilot in commandCause

Analysis

After an all day flight from vero beach, Florida, the pilot diverted from his destination to his alternate and attempted a coupled ILS approach at Twin Falls, Idaho. During the approach, his autopilot disengaged and he missed the approach, and then elected to hand fly an approach, when he couldn't reengage the autopilot. During the second approach attempt, he descended below the glide path and impacted terrain. Weather at the time of the occurrence was one half mile visibility and 200 feet obscured cloud layer. The aircraft rolled over after impacting in a level plowed field. The pilot turned on the ELT after trying his radios and discovering that the ELT was not transmitting.

Aircraft

Registration
N856M
Reported as
Piper PA-46
Category
Airplane
Serial number
46-8508069
Engine
Continental IO-520-BE, 310 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
David & Patricia Wilson
Registered owner
David & Patricia Wilson
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 1, 1992
Departed
GXY · Greeley, CO
Destination
SUN · Hailey, ID
Flight plan
IFR
Airport
TWF · Twin Falls Regional, runway 25, 8,703 × 150 ft, asphalt

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
46
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,171 total · 19 in this make and model · 1,102 as pilot in command · 67 in the last 90 days · 41 in the last 30 days · 12 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
14° at 6 knots
Lowest ceiling
200 ft
Temperature
30 °F, dew point 30 °F
Altimeter
29.00 inHg
Observed at
TWF, 1 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.