# NTSB MKC90LA135: Callair A-9, N9621Z, Barrett, MN, June 22, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 22, 1990, 11:00 local (16:00 UTC)
- Place: Barrett, MN
- Coordinates: 45.659721, -94.68016 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.6597&lon=-94.6802&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 15, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 35005
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC90LA135
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35005/pdf
- Page: https://openairdocs.org/ntsb/MKC90LA135

## Probable cause

INADEQUATE VISUAL OUTLOOK AND A DELAYED PULL-UP BY THE PILOT IN COMMAND.

## Sequence of events

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

- In flight collision with object, maneuvering - aerial application
  - object - wire,static (contributing factor)
  - object - utility pole (contributing factor)
  - visual lookout - inadequate, pilot in command (cause)
  - pull-up - delayed, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

WHILE CONDUCTING AN AERIAL APPLICATION MANEUVER, THE COMMERCIAL PLT FAILED TO AVOID A COLLISION WITH POWER WIRES AND A UTILITY POLE, DURING A PULL UP AFTER A SWATH RUN. THE RIGHT WING STRUCK THE POLE, SEPARATING A PORTION OF THE WING, RESULTING IN AN UNCONTROLLED ROLL. THE AIRCRAFT STRUCK THE TERRAIN AND CONTINUED TO ROLL AND CARTWHEEL, COMING TO A STOP IN AN UPRIGHT POSITION.

## Aircraft

- Registration: [N9621Z](https://openairdocs.org/deregistered/N9621Z-2013-05-23), registration cancelled 2013-05-23, S/N 1024, built 1963 (OpenAirDocs)
- Reported make and model: CALLAIR A-9
- Registry model: [Callair A-9](https://openairdocs.org/model/callair-a-9) (registry code 1850120) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1024
- Engines: LYCOMING O-540-B2B5 235 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Hjelle, Glenn T.
- Registered owner: Unknown
- Departed: Y63, ELBOW LAKE, MN

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 25; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; flight hours: 376 total, 151 in this make and model, 316 as pilot in command, 108 in the last 90 days, 89 in the last 30 days, 16 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 340° at 11 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °F
- Observed at: AXN, 15 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 19900622022129A](https://openairdocs.org/incident/19900622022129A), Jun 22, 1990: Airpts A9, Barrett, MN, Substantial damage. Collided with wires and a pole on pull-up from a spray run. Impact severed part of wing. Caused uncontrolled roll.

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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