CHI00LA094

NTSB accident investigation · Cessna A188B · Hayti, MO · March 21, 2000

Accident · Serious injuriesLimited investigationFinal report
Date
March 21, 2000, 15:00 local (21:00 UTC)
Place
Hayti, MO
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N4859QCessna A188B
Weather
Visual (VMC) · Not reported
Status
Completed · report March 2, 2001
Report
Approved by Office Director
FAA report
20000321010549A
Case key
48844

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 failure of maintenance personnel to properly install and connect the aileron control rod. Factors were the inadequate annual inspection by maintenance personnel and the aileron control not possible by the pilot.

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
Flt control syst,aileron control cable/rod - not connectedCause
Maintenance,installation - improperOther maintenance personnelCause
Maintenance,annual inspection - inadequateOther maintenance personnelFactor
Aircraft control - not possiblePilot in commandFactor
Forced landingEmergency descent/landing
In flight collision with terrain/waterEmergency landing

Analysis

The airplane had just received an annual inspection and a maintenance test flight was being performed. The pilot reported that during the flight the aileron control was ineffective. He reported that the '...right aileron appeared to be disconnected, moving up and down, [with] no response.' The pilot said that he was in a right turn and was unable to bring up the right wing. He said that he was losing altitude and decided to land the airplane on '... soft plowed ground...' The pilot said that, during the landing, the right wing struck the ground. During a postaccident examination of the aircraft, the right aileron pushrod end bearing bolt was found installed in the bellcrank, but the bolt did not pass through the rod end bearing. According to maintenance records, the aileron pushrod end bearings were replaced during the annual inspection due to excessive play. No other anomalies were found with respect to the aircraft or aircraft systems.

Factual narrative

On March 21, 2000, at 1500 central standard time, a Cessna A188B, N4859Q, sustained substantial damage when it impacted the terrain during a forced landing following a loss of aileron control during flight. The 14 CFR Part 91 maintenance flight was operating in visual meteorological conditions and was not on a flight plan. The commercial rated pilot received serious injuries. The flight originated from the Mid Continent Airport, Hayti, Missouri about 1450 for a local flight.

The airplane had just received an annual inspection and a maintenance test flight was being performed. The pilot reported, in a written statement, that during the flight the aileron control was ineffective. He reported that the "...right aileron appeared to be disconnected, moving up and down, [with] no response." The pilot said that he was in a right turn and was unable to bring up the right wing. He said that he was losing altitude and decided to land the airplane on "... soft plowed ground..." The pilot said that, during the landing, the right wing struck the ground.

During a postaccident examination of the aircraft, the right aileron pushrod end bearing bolt was found installed in the bellcrank, but the bolt did not pass through the rod end bearing. According to maintenance records, the aileron pushrod end bearings were replaced during the annual inspection due to excessive play. No other anomalies were found with respect to the aircraft or aircraft systems.

Aircraft

Registration
N4859Q
Reported as
Cessna A188B
Category
Airplane
Serial number
188-02595
Airframe hours
5,138
Engine
Continental IO-520D, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 91
Registered owner
Mid Continent Aircraft Corp.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · March 21, 2000 · 0 hours before
Departed
M28

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
77
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
13,362 total · 300 in this make and model · 13,362 as pilot in command · 20 in the last 90 days · 11 in the last 30 days

Weather

Conditions
Visual (VMC) · Not reported
Wind
60° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
57 °F, dew point 48 °F
Altimeter
30.00 inHg
Observed at
HKA, 18 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.