# NTSB CHI07CA250: Grumman G-164A, N48558, Vinton, IA, August 5, 2007

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Data collection · Final report
- Date: August 5, 2007, 17:30 local (22:30 UTC)
- Place: Vinton, IA
- Coordinates: 42.220001, -92.031112
- Nearby events: https://openairdocs.org/map.md?lat=42.2200&lon=-92.0311&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report October 31, 2007
- Report: Approved by Office Director
- NTSB case key (mKey): 66581
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI07CA250
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66581/pdf
- Page: https://openairdocs.org/ntsb/CHI07CA250

## Probable cause

The pilot failed to maintain clearance from the power line while maneuvering during an aerial application flight.  A factor was the power line.

## 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
  - altitude/clearance - not maintained, pilot in command (cause)
  - object - wire,transmission (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - ground

## Analysis

The airplane struck a power line while maneuvering during an aerial application flight.  The pilot reported that he was maneuvering to re-enter the field after a go-around due to a high sink rate on the previous downwind pass.  The pilot reported that the landing gear "caught the top wire" of the north/south power line, and then the airplane impacted an east/west power line.  The airplane yawed 90-degrees and impacted the ground.  The airplane was consumed by fire after the ground impact.  The pilot received minor injuries.

## Factual narrative

The airplane struck a power line while maneuvering during an aerial application flight.  The pilot reported that he was maneuvering to re-enter the field after a go-around due to a high sink rate on the previous downwind pass.  The pilot reported that the landing gear "caught the top wire" of the north/south power line, and then the airplane impacted an east/west power line.  The airplane yawed 90-degrees and impacted the ground.  The airplane was consumed by fire after the ground impact.  The pilot received minor injuries.

## Aircraft

- Registration: [N48558](https://openairdocs.org/deregistered/N48558-2010-04-05), registration cancelled 2010-04-05, S/N 1641, built 1976 (OpenAirDocs)
- Reported make and model: Grumman G-164A
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164A](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164a) (registry code 3952801) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1641
- Engines: Pratt & Whitney 1340-AN1 reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Aerial observation, Part 137
- Registered owner: Kirk Aviation
- Airworthiness certificate: Special, Restricted (Special)
- Departed: VTI, Vinton, IA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; injuries: minor; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2; flight hours: 2,118 total, 234 in this make and model, 357 in the last 90 days, 154 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day

## 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 20070805020049A](https://openairdocs.org/incident/20070805020049A), Aug 5, 2007: Scwzer G164A, Vinton, IA, Substantial damage. (-23) Pilot was spraying a field near Vinton, Iowa. Tail caught a power line and spun the aircraft into another power line. Aircraft crashed and burned. Pilot…

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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