DCA18CA169

NTSB accident investigation · Boeing 737-8H4 · Baltimore, MD · May 7, 2018

Accident · No injuriesData collectionFinal report
Date
May 7, 2018, 00:08 local (04:08 UTC)
Place
Baltimore, MD
Injuries
181 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N8655DBoeing 737-8H4
Defining event
Taxi-from runway: Ground collision
Weather
Visual (VMC) · Night
Status
Completed · report September 5, 2018
Report
Approved by Office Director
NTSB office
Major Investigations Division
Lead agency
Other
FAA report
20180507013309A
Case key
97175

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

The maintenance truck driver's failure to give way to the airplane that resulted in the truck colliding with the taxiing aircraft.

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.

Action: incorrect action performancePersonnel issues › Action/decision · Ground crewBoeing 737-8H4: 4 casesAll aircraft: 1,386 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

On May 7, 2018, at approximately 0010 am eastern daylight time, Southwest Airlines flight 6263, a B737-800, N8655D, was struck by a Southwest Airlines maintenance truck as the aircraft was being marshaled into its gate at Baltimore/Washington International Thurgood Marshall Airport (KBWI), Baltimore, Maryland. There were no injuries to the 181 passengers and crewmembers onboard and the airplane sustained substantial damage. The flight was operating under 14 CFR Part 121 as a regularly scheduled passenger flight from Fort Lauderdale–Hollywood International Airport (KFLL), Fort Lauderdale, Florida, to KBWI. According to the flight crew, they had cleared the safety zone prior to joining the J-line. According to ground witnesses, the maintenance vehicle appeared to initially slow down for the airplane, but then appeared to increase its speed to pass in front of the airplane before it could enter the gate. The airplane sustained damage to the left and right nose landing gear doors, nose landing gear trunnion fittings, and to the left-hand forward fuselage skin and stringers.

Factual narrative

On May 7, 2018, at approximately 0010 am eastern daylight time, Southwest Airlines flight 6263, a B737-800, N8655D, was struck by a Southwest Airlines maintenance truck as the aircraft was being marshaled into its gate at Baltimore/Washington International Thurgood Marshall Airport (KBWI), Baltimore, Maryland. There were no injuries to the 179 passengers and crewmembers onboard and the airplane sustained substantial damage. The flight was operating under 14 CFR Part 121 as a regularly scheduled passenger flight from Fort Lauderdale–Hollywood International Airport (KFLL), Fort Lauderdale, Florida, to KBWI. According to the flight crew, they had cleared the safety zone prior to joining the J-line. According to ground witnesses, the maintenance vehicle appeared to initially slow down for the airplane, but then appeared to increase its speed to pass in front of the airplane before it could enter the gate. The airplane sustained damage to the left and right nose landing gear doors, nose landing gear trunnion fittings, and to the left-hand forward fuselage skin and stringers.

Aircraft

Registration
N8655D
Reported as
Boeing 737-8H4 (NO SERIES)
Category
Airplane
Serial number
42529
Built
2014
Airframe hours
12,466
Engines
CFM International CFM56-7BE/F, 27,000 lbs thrust, turbo fanCFM International CFM56-7BE/F, 27,000 lbs thrust, turbo fan
Damage
Substantial damage
Flight
Part 121
Operator
Southwest Airlines Co
Registered owner
Southwest Airlines Co
Airworthiness certificate
Standard, Transport
Last inspection
Continuous airworthiness · May 6, 2018
Departed
KFLL · Fort Lauderdale, FL
Destination
KBWI · Baltimore, MD
Flight plan
IFR
Airport
KBWI · Baltimore/Thurgood Marshall In
Equipment
Satellite tracking device, Onboard weather, Heads up display, Electronic primary flight display, Electronic multifunction display, Stall warning system, Electronic flight bag or handheld device, Data recorder, Auto-pilot, Angle of attack indicator, ADS-B

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 · 6

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
48
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
April 20, 2017
Seat
Left
Restraint
5-point
Flight hours
8,232 in this make and model
Role
Co-pilot
Age
48
Injuries
None
Certificate
Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
December 2, 2017
Seat
Right
Restraint
5-point
Flight hours
367 in this make and model
Role
Cabin crew
Injuries
None
Seat
Rear
Role
Cabin crew
Injuries
None
Seat
Rear
Restraint
4-point
Role
Cabin crew
Injuries
None
Seat
Rear
Restraint
4-point
Role
Cabin crew
Seat
Rear
Restraint
4-point

Weather

Conditions
Visual (VMC) · Night
Visibility
10 statute miles
Lowest ceiling
8,000 ft broken
Temperature
16 °F, dew point 12 °F
Altimeter
29.94 inHg
Observed at
KBWI

Docket · 2

The files NTSB released with the investigation on August 13, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.7 MB in all.

FAA reports on this event · 1

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