# NTSB DFW05LA175: North American T-28B, N9060F, Abilene, TX, June 24, 2005 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 24, 2005, 11:50 local (16:50 UTC) - Place: Abilene, TX - Coordinates: 32.420833, -99.854446 - Nearby events: https://openairdocs.org/map.md?lat=32.4208&lon=-99.8544&mi=10 - Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 3 uninjured - Status: Completed, report October 27, 2005 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 61887 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DFW05LA175 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/61887/pdf - Page: https://openairdocs.org/ntsb/DFW05LA175 ## Probable cause (aircraft 2) The pilot's failure to maintain clearance while taxiing. Contributing factors were the pilot's diverted attention and the inaccurate frequency listing for ground control. ## Probable cause (aircraft 1) The other pilot's failure to maintain clearance while taxiing. Contributing factors were the other pilot's diverted attention and the inaccurate frequency listing for ground control. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Collision between aircraft (other than midair), standing - engine(s) operating - clearance - not maintained, pilot of other aircraft (cause) - diverted attention, pilot of other aircraft (contributing factor) - charts/other manuals - inaccurate (contributing factor) - Collision between aircraft (other than midair), taxi - charts/other manuals - inaccurate (contributing factor) - diverted attention, pilot in command (contributing factor) - clearance - not maintained, pilot in command (cause) ## Analysis (aircraft 2) See brief for DFW05LA175A ## Analysis (aircraft 1) The 25,500-hour pilot was holding short of taxiway Alpha on taxiway Delta awaiting further taxi instructions when another airplane collided into the rear of his airplane. The 27,996-hour pilot of the other airplane stated that after exiting the active runway onto taxiway Delta, he switched to 119.35 megahertz (MHz), the ground control frequency depicted on his Jeppesen IFR Flight Star printout and Global Positioning System (GPS). After calling on this frequency, the pilot was notified that the correct ground control frequency was 118.35 MHz. After switching frequencies, the pilot heard an Emergency Locator Transmitter (ELT) beacon, and thinking that the signal was emitting from his airplane, the pilot attempted to reset the ELT while he continued to taxi straight ahead. Subsequently, his airplane struck the other airplane that was holding short on taxiway Delta. **This report was modified on April 10, 2008.** ## Factual narrative (aircraft 2) See narrative for DFW05LA175A ## Factual narrative (aircraft 1) On June 24, 2005, approximately 1150 central daylight time (CDT), a vintage North American T-28B single-engine airplane, N9060F, was substantially damaged upon collision with another airplane while holding short on taxiway Delta at Dyess Air Force Base (DYS), near Abilene, Texas. The commercial pilot and passenger were not injured. The airplane was registered to and operated by Trojan Phlyers II Inc, of Fort Worth, Texas. Visual meteorological conditions prevailed and a flight plan was not filed for the 14 Code of Federal Regulations Part 91 personal flight. The cross-country flight originated from Hicks Airfield (T67), near Fort Worth, Texas, at 1110, and was destined for DYS. In a written statement, the 27,996-hour pilot of a vintage tail-wheel equipped Canadian Car & Foundry Harvard MK IV single-engine airplane, N15797, reported that after performing a formation 360-degree overhead approach as a flight of two, the control tower told the lead airplane to execute a go-around. N15797 was then cleared to land. During the landing roll on the active runway, the tower informed N15797 to exit on the next available taxiway, and then contact ground control. After exiting the active runway onto taxiway Delta, the pilot switched to 119.35 megahertz (MHz), the ground control frequency depicted on his Jeppesen IFR Flight Star printout and Global Positioning System (GPS). After calling on this frequency, the pilot was notified that the correct ground control frequency was 118.35 MHz. While taxiing on taxiway Delta, the pilot switched to the correct frequency. While taxiing the pilot stated that he heard the sound of an Emergency Locator Transmitter (ELT) beacon, and thinking that the signal was emitting from his airplane, he attempted to reset the ELT while he continued to taxi. While taxiing straight ahead the pilot of N15797 allowed his airplane to collide with N9060F, which was holding short of taxiway Alpha on taxiway Delta awaiting further taxiing instructions. Examination of the T-28B by an Federal Aviation Administration (FAA) inspector revealed that the left horizontal stabilizer and elevator were separated from the fuselage. Examination of the Harvard MK IV revealed that the propeller and engine cowling were damaged. **This report was modified on April 8, 2008.** ## Aircraft 1 - Registration: N9060F (not matched to a registry record) - Reported make and model: North American T-28B - Category: Airplane - Serial number: 138164 - Airframe hours: 16555 - Engines: Wright R1820-86B 1425 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Trojan Phylers II Inc. - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Annual, August 1, 2004, 57 hours before - Departed: T67, Fort Worth, TX - Destination: DYS, Abilene, TX - Airport: DYS, Dyess Air Force Base ## Aircraft 2 - Registration: [N15797](https://openairdocs.org/aircraft/N15797), registered now, S/N CCF4-199, built 1945 (OpenAirDocs) - Reported make and model: Canadian Car & Foundry Mark IV - Registry model: [Canadian Car & Foundry HARVARD MK IV](https://openairdocs.org/model/canadian-car-foundry-harvard-mk-iv) (registry code 1922828) (OpenAirDocs) - Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs) - Category: Airplane - Engines: reciprocating - Damage: Minor damage - Flight: Personal, Part 91 - Operator: Commemorative AirForce - Departed: 3T2, Manvel, TX - Destination: Abilene, TX - Airport: DYS, Dyess Air Force Base ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot, aircraft N9060F; age 67; injuries: none; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; seat: front; flight hours: 25,500 total, 1,300 in this make and model, 14,000 as pilot in command - Pilot, aircraft N15797; injuries: none ## Weather - Conditions: Visual (VMC), Day - Wind: 140° at 12 knots, gusting 17 - Visibility: 7 statute miles - Lowest ceiling: none - Temperature: 91 °F, dew point 54 °F - Altimeter: 30.03 inHg - Observed at: DYS ## 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 20050624012262A](https://openairdocs.org/incident/20050624012262A), Jun 24, 2005: Namer T28B, Abilene, TX, Substantial damage. (-23) On June 24, 2005, at approximately 11:50 CDT, a collision occurred between two aircraft on taxiway delta at Dyess air force base (dys), located in… - [Incident 20050624012071I](https://openairdocs.org/incident/20050624012071I), Jun 24, 2005: Namer HARVARDMK4, Abilene, TX, Minor damage. (-23) On June 24, 2005, at approximately 11:50 CDT, a collision occurred between two aircraft on taxiway delta at Dyess air force base (dys), located in… 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.