# NTSB CHI91GA014: Cessna 172P, N99862, Williamsburg, IA, October 14, 1990

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Final report
- Date: October 14, 1990, 07:32 local (12:32 UTC)
- Place: Williamsburg, IA
- Coordinates: 41.659458, -92.000625 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.6595&lon=-92.0006&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report November 23, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 14922
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI91GA014
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/14922/pdf
- Page: https://openairdocs.org/ntsb/CHI91GA014

## Probable cause

THE PILOT-IN-COMMAND'S ABRUPT PULL-UP TO AVOID AN OBSTACLE. CONTRIBUTING WAS THE PILOT-IN-COMMAND'S DIVERTED ATTENTION TO ACTIVITIES ON THE GROUND.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Abrupt maneuver, maneuvering
  - object - wire,transmission
  - pull-up - attempted, pilot in command (contributing factor)
  - diverted attention, pilot in command (contributing factor)
  - stall/spin - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled
  - altitude - unavailable
  - remedial action - not possible, pilot in command

## Analysis

THE AIRCRAFT WAS IN ACTIVE PURSUIT (POLICE CHASE). THE AIRCRAFT WAS OBSERVED IN A LOW LEVEL LEFT TURN APPROACHING AN AREA OF ELECTRICAL POWER LINES. THE AIRCRAFT WAS SEEN TO PITCH-UP, DEPART CONTROLLED FLIGHT, AND DESCEND INTO THE TERRAIN. A POSTIMPACT FIRE ENSUED AND CONSUMED MAJOR PORTIONS OF THE AIRCRAFT.

## Aircraft

- Registration: [N99862](https://openairdocs.org/deregistered/N99862-1991-05-23), registration cancelled 1991-05-23, S/N 17276518 (OpenAirDocs)
- Reported make and model: CESSNA 172P
- Registry model: [Cessna 172P](https://openairdocs.org/model/cessna-172p) (registry code 2072436) (OpenAirDocs)
- Category: Airplane
- Serial number: 17276518
- Engines: LYCOMING O-320-D2J 160 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Public aircraft, Part 91
- Registered owner: Public Salfety-State Patrol
- Departed: CID, CEDAR RAPIDS, IA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; toxicology performed; flight hours: 1,544 total, 1,500 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 7 knots
- Visibility: 10 statute miles
- Lowest ceiling: 7,000 ft broken
- Temperature: 54 °F, dew point 48 °F
- Observed at: CID, 18 nm away

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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