# NTSB CHI84FA250: Grumman G-164B, N6533K, Warren, MN, June 20, 1984 - Type: NTSB accident investigation - Classification: Accident · Fatal · Field investigation · Final report - Date: June 20, 1984, 11:14 local (16:14 UTC) - Place: Warren, MN - Coordinates: 48.189002, -96.76004 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=48.1890&lon=-96.7600&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: Fatal - Injuries: 2 fatal - Status: Completed - Report: Approved by Office Director - NTSB case key (mKey): 12404 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI84FA250 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12404/pdf - Page: https://openairdocs.org/ntsb/CHI84FA250 ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Midair collision, descent - normal - visual lookout - inadequate, pilot in command (cause) - visual lookout - inadequate, pilot of other aircraft (cause) - visual separation - not attained, pilot in command (cause) - visual separation - not attained, pilot of other aircraft (cause) - In flight collision with terrain/water, descent - uncontrolled - Midair collision, climb - to cruise - visual lookout - inadequate, pilot in command (cause) - visual lookout - inadequate, pilot of other aircraft (cause) - visual separation - not attained, pilot in command (cause) - visual separation - not attained, pilot of other aircraft (cause) - In flight collision with terrain/water, descent - uncontrolled ## Analysis (aircraft 2) N9367K WAS ON DEPARTURE AND CLIMBOUT TO AERIAL APPLICATION OPERATIONS. N6533K WAS ABOUT TO ENTER THE TRAFFIC PATTERN TO LAND AND RELOAD. MARKS ON RESPECTIVE AIRFRAMES INDICATE N9367K WAS ABOVE AND APPROACHING N6533K FROM THE LATTER'S FORWARD LEFT QUARTER; N6533K WAS BELOW AND APPROACHING N9367K FROM THE LATTER'S FORWARD RIGHT QUARTER WHEN THE COLLISION OCCURRED. WITNESSES NOTED NO EVASIVE ACTION BY EITHER AIRCRAFT. COLLISION OCCURRED ABOUT 500 FT AGL, 1 AND 1/2 MI FROM AIRPORT. BOTH ACFT SUSTAINED STRUCTURAL DAMAGE AND DESCENDED TO GROUND IMPACT IN UNCONTROLLED FLIGHT. ## Analysis (aircraft 1) N9367K WAS ON DEPARTURE AND CLIMBOUT TO AERIAL APPLICATION OPERATIONS. N6533K WAS ABOUT TO ENTER THE TRAFFIC PATTERN TO LAND AND RELOAD. MARKS ON RESPECTIVE AIRFRAMES INDICATE N9367K WAS ABOVE AND APPROACHING N6533K FROM THE LATTER'S FORWARD LEFT QUARTER; N6533K WAS BELOW AND APPROACHING N9367K FROM THE LATTER'S FORWARD RIGHT QUARTER, WHEN THECOLLISION OCCURRED. WITNESSES NOTED NO EVASIVE ACTION BY EITHER AIRCRAFT. COLLISION OCCURRED ABOUT 500 FT AGL, 1 AND 1/2MILES FROM AIRPORT. BOTH ACFT SUSTAINED STRUCTURAL DAMAGE AND DESCENDED TO GROUND IMPACT IN UNCONTROLLED FLIGHT. ## Aircraft 1 - Registration: [N6533K](https://openairdocs.org/deregistered/N6533K-1985-05-15), registration cancelled 1985-05-15, S/N 358B (OpenAirDocs) - Reported make and model: GRUMMAN G-164B - Registry model: [Grumman G-164B](https://openairdocs.org/model/grumman-g-164b) (registry code 3952703) (OpenAirDocs) - Category: Airplane - Serial number: 358B - Engines: P&W R1340-ANI 600 horsepower reciprocating - Damage: Destroyed - Fire: On-Ground - Flight: Aerial application, Part 137 - Registered owner: Pulkrabeck Airspray - Airworthiness certificate: Standard, Utility - Last inspection: Annual, April 28, 1984 - Departed: D37, WARREN, MN ## Aircraft 2 - Registration: N9367K (not matched to a registry record) - Reported make and model: CESSNA T188C - Category: Airplane - Serial number: T1880398T - Engines: CONTINENTAL TSIO-520-T 310 horsepower reciprocating - Damage: Destroyed - Flight: Aerial application, Part 137 - Operator: Pulkrabek Airspray,Inc., doing business as Pulkrabek Airspray,Inc - Registered owner: Wilmar Aerial Spraying,Inc - Airworthiness certificate: Standard, Utility - Last inspection: Annual, November 9, 1983 - Departed: D37, WARREN, MN ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot, aircraft N6533K; age 52; airline transport; airplane ratings: single-engine sea, single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; toxicology performed; flight hours: 8,427 total, 50 in the last 90 days, 20 in the last 30 days, 4 in the last 24 hours - Pilot, aircraft N9367K; age 50; airline transport; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: center; toxicology performed; flight hours: 29,700 total, 250 in the last 90 days, 125 in the last 30 days, 5 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 180° at 10 knots - Visibility: 10 statute miles - Lowest ceiling: none ## FAA reports on this event (2) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19840620031031A](https://openairdocs.org/incident/19840620031031A), Jun 20, 1984: Scwzer G164B, Warren, MN, Destroyed. Aircraft collided with N9367K while entering traffic pattern. No aircraft malfunction found. - [Accident 19840620031032A](https://openairdocs.org/incident/19840620031032A), Jun 20, 1984: Cessna T188C, Warren, MN, Destroyed. Aircraft collided with N6533K while exiting traffic pattern. No aircraft malfunction found. 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. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.