# NTSB CHI98LA250: Canadian Car & Foundry Harvard MK IV, N5101W, Dyersville, IA, July 14, 1998

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: July 13, 1998, 19:40 local (Jul 14, 1998, 00:40 UTC)
- Place: Dyersville, IA
- Coordinates: 42.480205, -91.110237 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.4802&lon=-91.1102&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report May 19, 1999
- Report: Approved by Office Director
- NTSB case key (mKey): 43082
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI98LA250
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/43082/pdf
- Page: https://openairdocs.org/ntsb/CHI98LA250

## Probable cause

the pilot in command's not maintaining control of the airplane and his inadvertently allowing the airplane to enter a stall.  A factor was the undetermined loss of engine power.

## Sequence of events

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

- Loss of engine power, takeoff - initial climb
  - reason for occurrence undetermined (contributing factor)
- Loss of control - in flight, takeoff - initial climb
  - aircraft control - not maintained, pilot in command (cause)
  - stall - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

The pilot said that there was a loss of engine power during initial climb after takeoff.  He said that the airplane turned to the right in a nose up attitude, stalled, and impacted the terrain.  An examination of the airplane after the accident failed to reveal any mechanical anomalies with the engine or flight controls.

## Factual narrative

On July 13, 1998, at 1940 central daylight time, a Canadian Car & Foundry Harvard MK IV, N5101W, piloted by a private pilot, sustained substantial damage when it impacted the terrain, following a loss of control during takeoff, near Dyersville, Iowa.  Visual meteorological conditions prevailed at the time of the accident.  The 14 CFR Part 91 personal flight was not operating on a flight plan.  The pilot and one passenger reported minor injuries.  The flight was originating at the time of the accident with the intended destination of Dubuque Regional Airport, near Dubuque, Iowa.

The pilot stated in his written statement that the engine lost power during initial climb, after which the airplane "... turned to the right in a nose up attitude stalled, and impacted on the nose and right wing."

An inspection of the airplane subsequent to the accident did not reveal mechanical problems with the engine.  The airplane's flight control continuity was verified.

## Aircraft

- Registration: [N5101W](https://openairdocs.org/aircraft/N5101W), registered now, S/N 192, built 1952 (OpenAirDocs)
- Reported make and model: Canadian Car & Foundry HARVARD MK IV (HARVARD MK)
- Registry model: [Canadian Car & Foundry HARVARD MK IV](https://openairdocs.org/model/canadian-car-foundry-harvard-mk-iv) (registry code 1922828) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: CCF492
- Engines: P&W R-1340 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Steven Patrick Bradley
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, October 31, 1997
- Departed: NONE
- Destination: DBQ, DUBUQUE, IA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: front; flight hours: 795 total, 280 in this make and model, 30 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 6 statute miles
- Lowest ceiling: none
- Temperature: 73 °F, dew point 68 °F
- Altimeter: 29.00 inHg
- Observed at: DBQ, 19 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 (OpenAirDocs).

- [Accident 19980713026869A](https://openairdocs.org/incident/19980713026869A), Jul 13, 1998: Namer HARVARDMK4, Dyersville, IA, Substantial damage. (-23) The acknowledged pilot-in-command and the second pilot, who is a pilot examiner, were practicing commercial maneuvers and allowing the second pilot to…

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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