# NTSB ATL91LA152: Waco UPF-7, N29926, Manning, SC, August 5, 1991 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 5, 1991, 10:30 local (14:30 UTC) - Place: Manning, SC - Coordinates: 33.690807, -80.20906 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=33.6908&lon=-80.2091&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report March 31, 1993 - Report: Approved by Office Director - NTSB case key (mKey): 8451 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL91LA152 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/8451/pdf - Page: https://openairdocs.org/ntsb/ATL91LA152 ## Probable cause THE PILOT'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL DURING THE TAKEOFF ROLL, AND HIS FAILURE TO ABORT THE TAKEOFF IN A TIMELY MANNER ONCE THE AIRPLANE HAD DEPARTED THE RUNWAY SURFACE. A FACTOR IN THE ACCIDENT WAS THE PILOT'S FAILURE TO UTILIZE THE ENTIRE AVAILABLE RUNWAY FOR TAKEOFF. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - On ground/water collision with object, takeoff - aborted - terrain condition - grass - terrain condition - wet - all available runway - not used, pilot in command (contributing factor) - directional control - not maintained, pilot in command (cause) - abort - delayed, pilot in command (cause) - ground loop/swerve - performed, pilot in command ## Analysis THE PILOT WAS PERFORMING AN INTERSECTION TAKEOFF FOR A LOCAL FLIGHT. HE REPORTED THAT THE AIRPLANE WAS NOT ACCELERATING NORMALLY ALTHOUGH THE ENGINE SOUNDED NORMAL. AT ABOUT 700 FEET INTO THE TAKEOFF ROLL, THE PILOT INADVERTENTLY ALLOWED THE AIRPLANE TO DEPART THE RUNWAY TO THE LEFT INTO THE GRASS. UNABLE TO CONTINUE THE TAKEOFF, THE PILOT GROUND LOOPED THE AIRPLANE. THE FAA INSPECTOR REPORTED THAT THE PILOT ATTEMPTED TO CONTINUE THE TAKEOFF AFTER THE AIRPLANE HAD DEPARTED THE RUNWAY SURFACE. THE GRASS ALONG THE RUNWAY WAS ABOUT 12 INCHES HIGH AND THE GROUND WAS WET. RUNUP INSPECTION OF THE ENGINE FAILED TO INDICATE ANY MECHANICAL PROBLEMS OR LOSS OF ENGINE POWER. ## Aircraft - Registration: [N29926](https://openairdocs.org/aircraft/N29926), registered now, S/N 5423 (OpenAirDocs) - Reported make and model: WACO UPF-7 - Registry model: [Waco UPF-7](https://openairdocs.org/model/waco-upf-7) (registry code 9601302) (OpenAirDocs) - Registry engine: [Continental W670 series](https://openairdocs.org/engine/continental-w670-series) (registry code 17018, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 5423 - Airframe hours: 3300 - Engines: CONTINENTAL W670 220 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Dominici, Raymond H. - Registered owner: Dominici, Raymond H. - Last inspection: Annual, March 1, 1991, 50 hours before - Airport: MNI, Clarendon County, runway 1, 3,600 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 52; private; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: rear; flight hours: 758 total, 171 in this make and model, 640 as pilot in command, 48 in the last 90 days, 35 in the last 30 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 300° at 6 knots - Visibility: 4 statute miles - Lowest ceiling: none - Temperature: 84 °F, dew point 72 °F - Altimeter: 30.00 inHg - Observed at: SSC, 22 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 19910805031219A](https://openairdocs.org/incident/19910805031219A), Aug 5, 1991: Waco UPF7, Manning, SC, Substantial damage. Looked down into cockpit on takeoff veered off runway into tall grass tried liftoff but gave up and ground looped. ## Other investigations on N29926 (2) 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 LAX92FA257](https://openairdocs.org/ntsb/LAX92FA257), Jun 23, 1992: Waco UPF-7 (N29926), Sedona, AZ, destroyed, 2 fatal. Probable cause: FUEL EXHAUSTION DUE TO THE PILOTS INADEQUATE PREFLIGHT PLANNING AND HIS FAILURE TO REFUEL THE AIRPLANE PRIOR TO DEPARTURE. FACTORS IN THE ACCIDENT WERE: 1) THE UNRELIABLE FUEL SIGHT GAUGES WHICH WERE… - [NTSB SEA77DYG10](https://openairdocs.org/ntsb/SEA77DYG10), Nov 20, 1976: Waco UPF-7 (N29926), Spokane, WA, 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.