# NTSB NYC99LA127: Boeing 727, N282SC, Sterling, VA, May 28, 1999 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: May 28, 1999, 15:10 local (19:10 UTC) - Place: Sterling, VA - Coordinates: 38.989898, -77.460083 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.9899&lon=-77.4601&mi=10 - Phase of flight: [Pushback/towing](https://openairdocs.org/ntsb-phases/200) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 90 uninjured - Status: Completed, report June 22, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 46524 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC99LA127 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/46524/pdf - Page: https://openairdocs.org/ntsb/NYC99LA127 ## Probable cause Inadequate visual lookout by the tug operator. A factor in this accident was inadequate pushback procedures by the airline which failed to provide proper assistance (wing walkers) to the tug operator. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - On ground/water collision with object, taxi - pushback/tow - object - vehicle - visual lookout - inadequate, driver of vehicle (cause) - procedure inadequate, company/operator management (contributing factor) ## Analysis The Boeing 727 was being pushed back by one person, who operated the pushback tug. The tug operator waited for an Airbus to approach the gate next to the pushback airplane and then began the pushback procedure. A catering truck was stopped behind the left wing of the 727, while the truck's driver waited for the Airbus to shut down it's engines. The catering truck driver stated, 'My partner yelled, 'He's moving or something' and instantly I tried to accelerate, but at the same time we were struck on the side and we were turning over...' Ramp personnel in the area observed the airplane heading towards the parked catering truck, and attempted to alert the tug operator. The Boeing 727's left wing struck the aft section of the catering truck. The airplane's left aileron and left wing tip were damaged. The distance from the airplane's left wingtip when parked at the gate, to the north edge of the service road where the catering truck was stopped, was about 75 feet. ## Factual narrative On May 28, 1999, about 1510 eastern daylight time, a Boeing 727, N282SC, operated by Sun Country Airlines, as flight 744, was substantially damaged when it's left wing struck a catering truck during pushback at the Washington Dulles International Airport, Sterling, Virginia. The 3 flight crew members, 4 flight attendants, and 83 passengers were not injured. The two occupants of the catering truck were also not injured. Visual meteorological conditions prevailed and an instrument flight rules flight plan had been filed for the flight destined for the Minneapolis-St.Paul International Airport, Minneapolis, Minnesota. The scheduled passenger flight was conducted under 14 CFR Part 121. The airplane was parked on gate C-24, and was being pushed back by a United Airlines, Aviation Maintenance Technician. The pushback was conducted as a "one person pushback." In a written statement, the tug operator said he waited for an Airbus 320, to taxi to gate 26, and then began to pushback the airplane for a "west taxi." He also stated that the airplane's rotating beacon was "ON." The tug operator further stated: "...There were no ground equipment on my left. All the service tugs were to my right. I was particularly concerned about the fueling truck to my right. I cleared all and was now about 125 to 150 feet into my push. Since he was going for a west taxi I started to turn the nose wheel and I know I was on the right side of the aircraft. By now my main wheels were approaching the edge of the service road, which in my experience is a sign that I was clear to taxi way. I engaged the food truck and my tow bar sheared and I stopped." In a written statement, the catering truck operator said he had stopped the truck behind the left wing of the 727, while he waited for the Airbus to shut down it's engines. "My partner ...yelled, 'He's moving or something' and instantly I tried to accelerate, but at the same time we were struck on the side and we were turning over..." Ramp personnel in the area observed the airplane heading towards the parked catering truck, and attempted to alert the tug operator before the collision. According to a Federal Aviation Administration Inspector, the airplane's left wing struck the aft section of the catering truck. The catering truck then flipped over onto it's side. The airplane's left aileron and left wing tip were damaged. According to airport personnel, the distance from the airplane's left wingtip when parked at the gate, to the north edge of the service road where the catering truck was parked, was about 75 feet. Subsequent to the accident, United Airlines revised the "One Person Pushback" procedures for the Boeing 727 and 737 aircraft to include a "guide person." The responsibilities of the guide person included signaling the tug operator that the ramp is clear, and maintaining verbal or visual contact with the tug operator until the aircraft clears the gate envelope. ## Aircraft - Registration: [N282SC](https://openairdocs.org/deregistered/N282SC-2002-09-06), registration cancelled 2002-09-06, S/N 22558, built 1982 (OpenAirDocs) - Reported make and model: Boeing 727 - Registry model: [Boeing 727-225](https://openairdocs.org/model/boeing-727-225) (registry code 1384077) (OpenAirDocs) - Registry engine: [Pratt & Whitney JT8D-17 series](https://openairdocs.org/engine/pratt-whitney-jt8d-17-series) (registry code 52049, turbo-jet) (OpenAirDocs) - Category: Airplane - Serial number: 22558 - Airframe hours: 43670 - Engines: P&W JT8D 16400 lbs thrust turbo fan - Damage: Substantial damage - Flight: Part 121 - Operator: Sun Country Airlines - Registered owner: Gemanco - Airworthiness certificate: Standard, Transport - Last inspection: Continuous airworthiness, May 28, 1999, 9 hours before - Departed: IAD - Destination: MSP, MINNEAPOLIS, MN - Flight plan: IFR - Airport: IAD, Washington Dulles ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 37; flight instructor, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 9,500 total, 6,508 in this make and model, 5,475 as pilot in command, 214 in the last 90 days, 69 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 310° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 84 °F, dew point 48 °F - Altimeter: 30.00 inHg - Observed at: IAD ## 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 19990528006089A](https://openairdocs.org/incident/19990528006089A), May 28, 1999: Boeing 727225, Washington, DC, Substantial damage. Acft was being pushed back from the gate when one of the acfts wings struck a catering truck. No injuries reported. Acft sustained substantial damage.(-23)… 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.