CEN13LA004

NTSB accident investigation · Boeing 717-200 · Milwaukee, WI · October 5, 2012

Accident · No injuriesLimited investigationFinal report
Date
October 4, 2012, 20:10 local (Oct 5, 2012, 01:10 UTC)
Place
Milwaukee, WI
Injuries
108 uninjured
Damage
Substantial damage
Phase of flight
Standing
Aircraft
N894ATBoeing 717-200
Defining event
Standing-engine(s) not oper: Aircraft servicing event
Weather
Visual (VMC) · Night
Status
Completed · report January 22, 2013
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Flight Standards District Office
FAA report
20121004022789A
Case key
85253

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

An obstruction (a sleeve of cups) that lodged under the catering truck brake pedal, which prevented the driver from stopping the truck before it struck the parked airplane.

Findings · 1

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Object/animal/substance: ground vehicleEnvironmental issues › Physical environment · Effect on equipmentBoeing 717-200: 1 caseAll aircraft: 132 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The regularly scheduled domestic passenger flight arrived at its gate and passengers began deplaning. A catering truck approached the right front service door. The catering truck driver said he applied the brakes three times in an attempt to stop the truck before it struck the airplane. The truck driver subsequently found that a “sleeve of hot/cold cups” rolled under the brake pedal and obstructed its movement.

Factual narrative

On October 4, 2012, about 2010 central daylight time, a Boeing 717-200, N894AT, was struck by a catering truck while it was parked at the gate at General Mitchell International Airport (KMKE), Milwaukee, Wisconsin. There were no injuries to the deplaning 103 passengers and 5 flight crew. The airplane was substantially damaged. The airplane was registered to Wells Fargo Bank Northwest, NA, Salt Lake City, Utah, and operated by Southwest Airlines, Inc., Dallas, Texas, as Flight 725, under the provisions of 14 Code of Federal Regulations Part 121 as a scheduled domestic passenger flight. Visual meteorological conditions prevailed at the time of the accident, and an instrument flight rules flight plan had been filed and closed. The cross-country flight had originated from Hartsfield - Jackson Atlanta International Airport (KATL), Atlanta, Georgia. The airplane had arrived at gate C14 and passengers had started deplaning. A catering truck, owned by AirTran Airways and operated by Aerotek Aviation, approached the right front service door. The driver said he attempted to stop, applying the brakes 3 times. The truck did not stop and struck the airplane. After the accident, the driver of the truck found a sleeve of hot/cold cups under the brake pedal. The damage to the airplane was confined to the area of the production splice, a joint where the forward portion of the fuselage is mated to the midsection fuselage. This included fuselage stations 207, 218, 228. 235, and 250.

Aircraft

Registration
N894AT
Reported as
Boeing 717-200
Category
Airplane
Serial number
55046
Airframe hours
24,645
Engine
Rolls Royce BR715C1-30, 21,000 lbs thrust, turbo fan
Damage
Substantial damage
Flight
Part 121
Operator
Southwest Airlines, Inc., doing business as AirTran Airways
Registered owner
Wells Fargo Bank Northwest, NA
Airworthiness certificate
Standard, Transport
Last inspection
Continuous airworthiness · October 2, 2012
Departed
KATL · Atlanta, GA
Destination
KMKE · Milwaukee, WI
Flight plan
IFR
Airport
KMKE · General Mitchell International

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Injuries
None
Seat
Left

Weather

Conditions
Visual (VMC) · Night
Wind
250° at 11 knots
Visibility
10 statute miles
Lowest ceiling
8,500 ft broken
Temperature
57 °F, dew point 43 °F
Altimeter
30.01 inHg
Observed at
KMKE

Docket · 6

The files NTSB released with the investigation on November 13, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.