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View Full Version : Air Canada Misloading Incidents


punkalouver
6th Jan 2022, 16:25
I am curious if anybody out there has their own procedures that they use to even partially monitor loading on their jet aircraft or is it the typical...hope for the best.

"Canadian investigators are probing the baggage-loading condition of a Boeing 737 Max 8 after an incident involving premature pitch-up during take-off. The Air Canada aircraft was departing Vancouver for Edmonton on 19 December. It was accelerating for take-off when the nose “rose unexpectedly”, according to Transportation Safety Board of Canada.“The [pilots were] able to hold it down and continued the take-off,” the authority adds. Flight AC234 then proceeded to Edmonton and landed safely. Subsequent inspection of the baggage hold found that 89 items of luggage had been placed in the aft hold, in contrast to the final loading documentation which showed them being in the forward hold.

“The company is conducting an investigation,” says the safety board. It identifies the airframe involved as C-GEKX which, according to Cirium data, had only been delivered to the airline a month beforehand. None of the 160 passengers and six crew members was injured."

"C-FTJV, an Air Canada Boeing 737 Max 8, was conducting flight ACA0557 from Los Angeles Intl.
(KLAX), CA to Vancouver Intl. (CYVR), BC. During take off rotation, flight crew felt that the nose of
the aircraft was slightly heavy. After take off, flight crew verified LDF (Load Final) Data for TOW
MAC (Take Off Weight Mean Aerodynamic Chord) accuracy. After verification, all cargo was
loaded in the forward cargo hold which resulted in a 5.8% forward difference in TOW MAC. Flight
continued to CYVR with no further incident."

N1EPR
6th Jan 2022, 20:30
When I was flying the MD11 I had a programable HP calculator that I taught to do weight and balance for the aircraft. It worked well enough to prevent a takeoff with a 10,000 pound error in takeoff weight on one occasion. However, it was dependent on the loaders info as to where things were loaded.

pilotmike
6th Jan 2022, 22:48
Not the first time it has happened.

737-300 G-POWC EDI - STN in November 2013, grossly misloaded because the ULD loading sequence wasn't checked, and they were reversed to have the heaviest at the front instead of at the rear, to balance the heavy cargo bay door at the front.

Synopsis.

The aircraft was loaded with the unit load devices (ULD) in the reverse order to that intended. This resulted in the aircraft CG being forward of the flight envelope limits. The crew encountered handling issues during takeoff but the aircraft landed safely at the destination. History of the flight The aircraft was on a cargo flight from Edinburgh Airport to Stanstead Airport. The cargo load consisted of eight unit load device (ULD) containers. The ULDs were loaded into the aircraft through a large cargo door located in the forward left fuselage. Due to the centre of gravity of the basic aircraft it was normal, when carrying mail freight, for the ULDs to be loaded with the heaviest at the rear of the aircraft, then in descending weight order towards the front of the aircraft with any empty ULDs loaded into the forward positions. The commander witnessed the ULDs arrive beside the aircraft and recalls noting that the number on the side of one of them was consistent with that on the load instruction form. The crew did not check the position of the ULDs after they were loaded in the aircraft....

Weight and balance

In the planned configuration for the aircraft load, the takeoff CG index would have been 38.8 units. The flight envelope forward limit at this takeoff weight was approximately 16 units. The actual index with the ULDs reverse loaded, was 3.8 units.

Recorded data

The FDR revealed that a pitch input was made between 133 and 137 KIAS and that the aircraft started to rotate at approximately 141 KIAS, then continued to rotate at a rate of approximately 1║/second to a pitch angle of 15║. The calculated VR was 128 KIAS and the normal rotation rate for this aircraft is between 2.5 and 3░/second

https://assets.publishing.service.gov.uk/media/5422f252ed915d13740003ed/Boeing_737-33A__G-POWC_04-14.pdf

Rodney Rotorslap
6th Jan 2022, 23:21
premature pitch-up + nose heavy?

Seat4A
7th Jan 2022, 01:51
Incident: Canada B38M at Los Angeles on Jan 3rd 2022, load mismatch results in nose heavy departure (http://avherald.com/h?article=4f2c0bab&opt=0)

By Simon Hradecky, created Thursday, Jan 6th 2022 20:20Z, last updated Thursday, Jan 6th 2022 20:20Z

An Air Canada Boeing 737-8 MAX, registration C-FTJV performing flight AC-557 from Los Angeles,CA (USA) to Vancouver,BC (Canada) with 103 people on board, was departing from Los Angeles' runway 25R when the crew noticed during rotation for takeoff that the aircraft was slightly nose heavy. The aircraft climbed out, the crew subsequently verified the load sheet and found out, that all cargo had been loaded into the forward cargo hold, which showed the actual CG 5.8% (in relation to MAC) forward of the computed takeoff CG. The crew continued the flight to Vancouver without further incident.

https://flightaware.com/live/flight/ACA557/history/20220104/0130Z/KLAX/CYVR

ACMS
7th Jan 2022, 04:59
So 2 incidents. One a pitch up due loaded in the rear and one a nose heavy due loaded in the front…..

sgs233a
8th Jan 2022, 03:46
So 2 incidents. One a pitch up due loaded in the rear and one a nose heavy due loaded in the frontů..

Averages out?