# NTSB MIA05CA032: Cessna 172B, N7493X, Zephyrhills, FL, November 21, 2004 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Data collection · Final report - Date: November 21, 2004, 16:30 local (21:30 UTC) - Place: Zephyrhills, FL - Coordinates: 29.228055, -82.15583 - Nearby events: https://openairdocs.org/map.md?lat=29.2281&lon=-82.1558&mi=10 - Phase of flight: [Other](https://openairdocs.org/ntsb-phases/800) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 1 serious - Status: Completed, report February 24, 2005 - Report: Approved by Office Director - Parties: Tampa, Florida - NTSB case key (mKey): 60647 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA05CA032 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/60647/pdf - Page: https://openairdocs.org/ntsb/MIA05CA032 ## Probable cause The pilot's failure to set the parking brake and his improper starting procedure which resulted in an unattended aircraft running away after hand starting the engine and the airplane colliding with parked airplanes, incurring substantial damage. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - On ground/water collision with object, other - brakes(normal) - not set, pilot in command (cause) - starting procedure - improper, pilot in command (cause) - aircraft unattended/engine(s) running - object - aircraft parked/standing - object - fence - Loss of control - on ground/water, standing - engine(s) operating - On ground/water collision with object, other - object - aircraft parked/standing ## Analysis The pilot stated that after refueling the airplane embarked and tried to start the airplane, and said that it would not start. He said he turned off the magneto switch, set the brakes, got out the airplane, and tried starting it by hand several times, but it would not start. After a brief distraction he said that when he again moved the propeller, all of a sudden the engine started operating immediately. He said the airplane moved forward and was heading toward the fuel tank, so he ran after it and grabbed the left strut to keep it from hitting the tank. He said the airplane proceeded between the fuel tank and the credit card machine, knocking him to the ground, and continued on, impacted two parked airplanes and two chain linked fences before stopping. ## Factual narrative On November 21, 2004, about 1630 eastern standard time, a Cessna 172B, N7493X, registered to and operated by a private individual as a Title 14 CFR Part 91 personal flight, impacted parked airplanes in Zephyrhills, Florida. Visual meteorological conditions prevailed, and no flight plan was filed. The private-rated pilot received serious injuries, and the airplane incurred substantial damage. The pilot stated that he had flown his airplane from Lakeland, Florida, to Zephyrhills, Florida, for fuel. After refueling he got in and tried to start the airplane, and said that it would not start. He said he turned off the magneto switch, set the brakes, got out the airplane, and tried starting it by hand several times, but it would not start. About that time a person drove up and asked him for directions, and after providing the person with information he said that when he next pulled the propeller, the engine started operating immediately, and its speed increased. The airplane started moving forward and the pilot said he jumped out of the way. He said it veered to the left and was heading toward the fuel tank, so the pilot said he ran after it and grabbed the left strut to keep it from hitting the tank. The airplane proceeded between the fuel tank and the credit card machine, and in the process the pilot said he was knocked to the ground. As the airplane continued on, the pilot said it impacted two parked airplanes, as well as two chain linked fences. The airplane's entanglement in the second fence caused the engine to cease operating, and as a result, the airplane stopped moving. ## Aircraft - Registration: [N7493X](https://openairdocs.org/deregistered/N7493X-2005-01-11), registration cancelled 2005-01-11, S/N 17247993, built 1960 (OpenAirDocs) - Reported make and model: Cessna 172B - Registry model: [Cessna 172B](https://openairdocs.org/model/cessna-172b) (registry code 2072406) (OpenAirDocs) - Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 17247993 - Engines: Teledyne Continental O-300-d 145 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: David D. Knight - Airworthiness certificate: Standard, Normal - Departed: ZPH, Zephyrhills, FL - Destination: LAL, Lakeland, FL ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 61; injuries: serious; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; last flight review February 11, 2003; flight hours: 643 total, 643 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: 90° at 9 knots - Visibility: 15 statute miles - Lowest ceiling: none - Temperature: 81 °F, dew point 55 °F - Altimeter: 30.14 inHg - Observed at: LAL ## 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 20041121031209A](https://openairdocs.org/incident/20041121031209A), Nov 21, 2004: Cessna 172B, Zephyrhills, FL, Substantial damage. (-23) PIC flew N7493X from lal into zph to obtain fuel (at a lower price). After fueling for the return flight to lal, he stated that the aircraft's battery… 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.