CHI92DCJ04

NTSB accident investigation · Callair A-9 · Beaver City, NE · July 10, 1992

Accident · No injuriesFinal report
Date
July 10, 1992, 17:25 local (22:25 UTC)
Place
Beaver City, NE
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N9627ZCallair A-9
Weather
Visual (VMC) · Day
Status
Completed · report August 31, 1993
Report
Approved by Office Director
FAA report
19920710024849A
Case key
15222

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The inadequate maintenance overhaul of the left magneto, and subsequent failure of the left magneto/ignition system which caused a complete loss of engine power.

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 engine power(total) - mech failure/malfManeuvering - turn to reverse direction
Ignition system,magneto - failure,totalCause
Maintenance,overhaul - inadequateOther maintenance personnelCause
Forced landingDescent - emergency
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - rough/unevenFactor

Analysis

The pilot was engaged in aerial application activities when the accident occurred. He stated he had just entered a climbing left turn to reverse direction at the end of a swath run when there was a total loss of engine power. He landed straight ahead in a terraced wheat field, and the airplane impacted a terrace. The pilot estimated he was about 50 feet above the ground when the power loss occurred. Post-accident investigation revealed the left magneto failed due to a jammed flyweight on the impulse coupling. The crankshaft drive gear then failed, and the engine lost power.

Aircraft

Registration
N9627Z
Reported as
Callair A-9
Category
Airplane
Serial number
1030
Airframe hours
3,828
Engine
Lycoming O-540-B2B5, 235 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Trail, John W & Hester A, doing business as Arapahoe Aerial Sprayers
Registered owner
Trail, John W & Hester A
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · October 10, 1991 · 79 hours before
Departed
37V · Arapahoe, NE
Destination
37V

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
44
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
7,632 total · 1,450 in this make and model · 7,516 as pilot in command · 52 in the last 90 days · 46 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
15 statute miles
Lowest ceiling
8,000 ft broken
Temperature
84 °F, dew point 54 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.