SEA93LA132

NTSB accident investigation · Cessna T-188C · Augusta, MT · June 17, 1993

Accident · Minor injuriesLimited investigationFinal report
Date
June 17, 1993, 09:40 local (15:40 UTC)
Place
Augusta, MT
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N9952JCessna T-188C
Weather
Visual (VMC) · Day
Status
Completed · report May 17, 1994
Report
Approved by Office Director
FAA report
19930617019239A
Case key
41717

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 airspeed and terrain clearance while maneuvering on an aerial application flight. A factor relating to the accident was the pilot's diverted attention.

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.

Loss of control - in flightManeuvering - aerial application
Airspeed - not maintainedPilot in commandCause
In flight collision with terrain/waterManeuvering - aerial application
Clearance - not maintainedPilot in commandCause
Diverted attentionPilot in commandFactor

Analysis

The pilot made an aerial application swath run toward rising terrain, initiated a turn around maneuver, diverted his attention to keeping the spraying area in sight and the acft lost airspeed. He applied full power and attempted to dump the chemicals but was unable to dump the load before the acft impacted a hill.

Factual narrative

On Thursday morning, June 17, 1993, at 0940 mountain daylight time, a Cessna T-188C, N9952J, operated by Lohse flying Service, impacted the ground 14 miles southeast of Augusta, Montana, while maneuvering. There was no flight plan filed for the local aerial application flight, conducted under 14 CFR 137 in visual meteorological conditions, that departed Augusta, Montana on June 17, 1993, at 0925. The commercial certificated pilot suffered minor injuries in the accident and the aircraft was substantially damaged. A post impact fire was extinguished by the pilot.

The pilot reported he was making a swath run toward rising terrain, lost sight of the marking flag, and got off course from the last spray pass, causing a skip in the spray coverage. He said he pulled up, started a left turn, trying to keep sight of the field where he left off and noticed he was losing airspeed. He indicated he immediately applied full power, lowered the nose to gain airspeed and continued turning away from the rising terrain. He said he attempted to dump the chemicals to lighten the load but was not able to dump the load before the aircraft impacted a small hill.

Aircraft

Registration
N9952J
Reported as
Cessna T-188C
Category
Airplane
Serial number
T18803881T
Airframe hours
1,605
Engine
Continental TSIO-520-T, 310 horsepower, reciprocating
Damage
Substantial damage
Fire
On-Ground
Flight
Aerial application · Part 137
Operator
Lohse Flying Service
Registered owner
Lohse Flying Service
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · March 26, 1993 · 349 hours before
Destination
3U5

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
37
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
1,705 total · 281 in this make and model · 1,586 as pilot in command · 290 in the last 90 days · 128 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 6 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
54 °F, dew point 46 °F
Altimeter
30.00 inHg
Observed at
GTF, 33 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.

Other investigations on N9952J · 1

Matched to the same aircraft by N-number and date.