Canadian North B733 at Fort MacKay on Dec 17th 2013, uncommanded left roll despite full right ailerons

Last Update: June 23, 2014 / 21:19:20 GMT/Zulu time

Bookmark this article
Incident Facts

Date of incident
Dec 17, 2013

Classification
Incident

Airline
Canadian North

Flight number
5T-1517

Departure
Fort MacKay Albian, Canada

Destination
Edmonton, Canada

Aircraft Registration
C-FGCN

Aircraft Type
Boeing 737-300

ICAO Type Designator
B733

A Canadian North Boeing 737-300, registration C-FGCN performing flight 5T-1517 from Fort MacKay Albian,AB to Edmonton,AB (Canada) with 139 people on board, was climbing through about 800 feet AGL when the aircraft began to uncommandedly roll left. The crew countered by applying full right ailerons, the roll to the left however continued. Airspeed began to decay, the crew applied nose down inputs, however, the aircraft reached a nose up attitude of 28 degrees despite the control column commanding nose down. The airspeed finally recovered and increased permitting the crew to retract the flaps after which the left roll ceased. The crew checked engine parameters and configuration with no anomalies detected and decided to continue the flight to Edmonton for a safe landing with no further anomaly observed.

The Canadian TSB reported the occurrence for the first time on Jun 23rd 2014 stating, that the weather conditions at Fort MacKay's Albian's Airport were -22 degrees C with moderate snow. Immediately prior to departure the aircraft was de-iced with type I followed by type IV fluid. Departure roll and rotation were normal. According to flight data recorder the aircraft reached a maximum left bank angle despite maximum right ailerons and a pitch attitude of 28 degrees despite the control column in a 10 degrees nose down position. After the speed recovered the crew retracted the flaps, the left roll ceased, the crew checked engine thrust settings and leading edge devices, all parameters were normal. The crew decided to continue the flight to Edmonton without declaring emergency. The crew used a reduced flap setting for landing. The airline and Boeing are further investigating the event.
Incident Facts

Date of incident
Dec 17, 2013

Classification
Incident

Airline
Canadian North

Flight number
5T-1517

Departure
Fort MacKay Albian, Canada

Destination
Edmonton, Canada

Aircraft Registration
C-FGCN

Aircraft Type
Boeing 737-300

ICAO Type Designator
B733

This article is published under license from Avherald.com. © of text by Avherald.com.
Article source

You can read 2 more free articles without a subscription.

Subscribe now and continue reading without any limits!

Subscribe now
Are you a subscriber? Login
Subscribe

Read unlimited articles and receive our daily update briefing. Gain better insights into what is happening in commercial aviation safety.

Compare our plans

Send tip

Support AeroInside by sending a small tip amount.

Send tip

Related articles

Newest articles

Subscribe today

Are you researching aviation incidents? Get access to AeroInside Insights, unlimited read access and receive the daily newsletter.

Pick your plan and subscribe

Partner

Blockaviation logo

A new way to document and demonstrate airworthiness compliance and aircraft value. Find out more.

ELITER Logo

ELITE Simulation Solutions is a leading global provider of Flight Simulation Training Devices, IFR training software as well as flight controls and related services. Find out more.

SafetyScan Pro

SafetyScan Pro provides streamlined access to thousands of aviation accident reports. Tailored for your safety management efforts. Book your demo today

AeroInside Blog
Popular aircraft
Airbus A320
Boeing 737-800
Boeing 737-800 MAX
Popular airlines
American Airlines
United
Delta
Air Canada
Lufthansa
British Airways