ANC11LA022

NTSB accident investigation · Boeing 737-301 · Dayton, OH · March 30, 2011

Accident · No injuriesLimited investigationFinal report
Date
March 30, 2011, 18:30 local (22:30 UTC)
Place
Dayton, OH
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N360WABoeing 737-301
Defining event
Initial climb: Miscellaneous/other
Weather
Visual (VMC) · Day
Status
Completed · report July 18, 2011
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA FSDO-03
FAA report
20110330030419A
Case key
78781

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 flightcrew's inadequate preflight inspection, resulting in in-flight structural damage to the airplane's fuselage from an unsecured pallet jack that was located in the airplane's empty cargo hold.

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.

Inspection: preflight inspectionPersonnel issues › Task performance · Flight crewBoeing 737-301: 1 caseAll aircraft: 551 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 cargo airplane departed on a positioning flight with an unsecured pallet jack in the empty cargo hold. During the flight, the pallet jack moved and damaged a fuselage structural frame. The flightcrew reported that they both looked in the cargo hold prior to the flight, but did not check the security of the pallet jack.

Factual narrative

On March 30, 2011, about 1830 central daylight time, a Boeing 737-301 airplane sustained substantial damage during departure from Dayton International Airport, Dayton, Ohio. The airplane was operated by Northern Air Cargo, Inc. (NAC), Anchorage, Alaska, as an instrument flight rules (IFR) positioning flight under 14 Code of Federal Regulations (CFR) Part 91. The captain, first officer, and flight mechanic, were not injured. Visual meteorological conditions prevailed, and an IFR flight plan was filed. The airplane was bound for Laredo, Texas. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on April 5, the Vice President (VP) of Operations for NAC said the cargo airplane was departing Dayton on a positioning flight. He said it appeared that during departure, an unsecured pallet jack in the cargo hold of the empty airplane hit the fuselage frame structure, fracturing a structural frame. He said the airplane was subsequently flown to a repair facility in Tucson, Arizona. In a written report to the NTSB received April 8, The VP reported that the first officer completed the preflight inspection of the airplane while the captain did the paperwork. He wrote that although both pilots looked in the cargo hold of the airplane, neither noticed the unsecured pallet jack.

Aircraft

Registration
N360WA
Reported as
Boeing 737-301
Category
Airplane
Serial number
23553
Airframe hours
50,924
Engines
CFM International CFM56-3B2, 22,000 lbs thrust, turbo jetCFM International CFM56-3B2, 22,000 lbs thrust, turbo jet
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Northern Air Cargo Inc, doing business as Northern Air Cargo
Registered owner
Wells Fargo Bank Northwest Na Trustee
Airworthiness certificate
Standard, Transport
Last inspection
Continuous airworthiness · March 14, 2011
Departed
KDAY · Dayton, OH
Destination
KLRD · Laredo, TX
Flight plan
IFR

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 · 3

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
35
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
February 19, 2011
Seat
Left
Flight hours
4,300 total · 1,500 in this make and model · 125 in the last 90 days
Role
Co-pilot
Age
32
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
September 2, 2010
Seat
Right
Flight hours
3,700 total · 350 in this make and model · 110 in the last 90 days
Role
Other flight crew
Injuries
None

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles

Docket · 1

The files NTSB released with the investigation on April 29, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 150 KB 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.