# NTSB CHI96LA150: Cessna 152, N93844, Blaine, MN, May 4, 1996 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: May 4, 1996, 15:30 local (20:30 UTC) - Place: Blaine, MN - Coordinates: 45.180271, -93.180908 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=45.1803&lon=-93.1809&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report July 3, 1996 - Report: Approved by Office Director - NTSB case key (mKey): 10241 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI96LA150 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/10241/pdf - Page: https://openairdocs.org/ntsb/CHI96LA150 ## Probable cause the student pilot's inadvertent encounter with the propblast from another airplane. A factor relating to the accident was: failure of the student to communicate with the pilot(s) of the other airplane before taxiing behind it. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Propeller blast or jet exhaust/suction, taxi - to takeoff - propeller/jet blast encounter - inadvertent, dual student (cause) - communications - inadequate, dual student (contributing factor) - Nose over, taxi ## Analysis The student pilot was taxiing for takeoff when he saw a large twin-engine turboprop airplane sitting on a runup pad next to the taxiway he was using. He said he stopped before passing behind the turboprop airplane and observed the propellers turning slowly. The pilot said he taxied behind the airplane and heard an increase in engine power. He said he tried to get past the area where his airplane was experiencing the other airplane's propwash, but was unable to do so. As he turned onto the taxiway leading to the active runway, his airplane was blown over. The pilot did not make contact with the pilot of the turboprop airplane before taxiing behind it. ## Factual narrative On May 4, 1996, at 1530 central daylight time, a Cessna 152, N93844, piloted by a student pilot, was substantially damaged when it was blown over as it passed behind a twin-engine turboprop airplane doing a runup. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 instructional solo flight was not operating on a flight plan. The pilot reported no injuries. The student pilot (pilot) stated he had been taxiing west on the parallel taxiway to runway 08 at the Anoka County Airport, Blaine, Minnesota, when he saw the turboprop airplane. The pilot said the airplane was sitting on a runup pad next to the taxiway. Its tail, according to the pilot, was facing toward the taxiway at an approximate 45 degree angle. He said he stopped before passing behind the airplane to see what it was doing. According to the pilot, the airplane was sitting on the runup pad with its engines idling. He was asked how he knew this. The pilot explained he could see the propeller blades moving very slowly. After deciding the turboprop airplane's engines were running slowly, the pilot said he continued his taxi for takeoff. The pilot said he heard the turboprop airplane's engines increase their speed as he passed behind the airplane. The pilot said when he heard the engines increase their power he tried to get out of the propwash. As he was turning onto the portion of the taxiway leading to runway 8's takeoff end, his airplane was blown over. During an interview with the accident airplane's operator it was revealed that the pilot told him that he had not attempted to make eye or radio contact with the pilot of the turboprop airplane. N93844 was about 150 feet behind the turboprop airplane when the propwash encounter took place, according to the operator. ## Aircraft - Registration: [N93844](https://openairdocs.org/deregistered/N93844-1999-02-18), registration cancelled 1999-02-18, S/N 15285560 (OpenAirDocs) - Reported make and model: Cessna 152 - Registry model: [Cessna 152](https://openairdocs.org/model/cessna-152) (registry code 2071835) (OpenAirDocs) - Category: Airplane - Serial number: 15285560 - Airframe hours: 1634 - Engines: Lycoming O-235-L2C 108 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: Anoka Flight Service - Registered owner: Virgil Barnes - Airworthiness certificate: Standard, Utility - Departed: ANE - Airport: ANE, Anoka County ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 26; student; medical: unknown, unknown; seat: left; flight hours: 110 total, 110 in this make and model, 15 in the last 90 days, 10 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 90° at 7 knots - Visibility: 15 statute miles - Lowest ceiling: 6,000 ft broken - Altimeter: 30.00 inHg - Observed at: MIC, 8 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 19960504028679A](https://openairdocs.org/incident/19960504028679A), May 4, 1996: Cessna 152, Minneapolis, MN, Substantial damage. Taxied behind aircraft that was conducting power check runs. Blown over on his back. (-23) student pilot taxied aircraft behind OV-1 mowhawk that was in the… ## Other investigations on N93844 (1) 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. - [NTSB DEN84LA002](https://openairdocs.org/ntsb/DEN84LA002), Oct 5, 1983: Cessna 152 (N93844), Grand Forks, ND, substantial damage 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.