

| Number | Description |
|---|---|
| 1 | large fibreglass panel aft between main gear |
| 2 | left wing movable vane |
| 3 | fibreglass panel |
| 4, 5 | pieces of wheel-well tub |
| 6 | left main gear |
| 7 | pieces of wheel-well tub |
| 8 | fibreglass panel (2 ft x 1 ft) |
| 9 | metal panel (~1 ft sq.) |
| 10 | brake metering valves |
| 11 | transformer rectifier units |
| 12 | mangled part of landing gear |
| 13 | nose wheel well with maintenance light |
| 14, 15 | skin with hydraulic lines |
| 16 | part of gear with spring |
| 17 | fibreglass panel (6 ft x 3 ft) |
| 18 | 601R101527/01 - RNCC026526 - flap track fairing |
| 19 | metal part |
| 20 | spring from front gear |
| 21 | 600-3201-71/A |
| 22 | 601R31178-1/N01 - CL601R s/n 68 right main fixed gear door and external power services panel |
| 23 | white fibreglass panel |
| 24 | 600-33039-4/F forward accessory compartment right side door |
| 25 | 601R31178-2/N01 CL601R s/n 70 - left main fixed gear door |
| 26 | 6013803* white skin panel |
| 27 | fibreglass panel (3 ft x 3 ft) |
| 28 | right main gear pivot |
| 29 | panel aft between wheel wells (3 ft x 1.5 ft) |
| 30 | part of nose gear door |
| 31 | 601R85001-95 (Dowdy 17008-109) s/n 00169 side stay actuator |
| 32 | m/n 15ERGS01 p/n 721863C s/n 0463 air driven generator uplock |
| 33 | type RTA-844 weather radar antenna s/n 1304 |
| 34 | 600-33253 1/R air driven generator door |
| 35 | right side aft wing root fillet panel |
| 36 | m/n 15ERGS02 p/n 756652A s/n 0223 ram air turbine |
| 37 | right main gear |
| 38 | 600-33039-3/F - captain side accessory door |
| 39 | piece of avionics bay floor (1 ft x 1 ft) |
| 40 | piece of wheel well |
| 41 | right aileron tip |
| 42 | piece of aluminum |
| 43 | piece of lens |
| 44 | antenna |
| 45 | honeycomb material with pin |

The following TSB Engineering Branch Reports were completed and are available on request:
| LP 28/98 | Records Group Report - CL-600-2B19, C-FSKI |
|---|---|
| LP 192/97 | Recorders Group Report Flight reconstruction video |
| LP 11/98 | Structures Group Report |
| LP 191/97 | Site Survey |
| LP 3/98 | Stall Protection System Components Testing |
| LP 41/98 | Bending Strength of Crash Axe and Pry Bar |
| ACA646 | Air Canada Flight 646 |
|---|---|
| ACARS | aircraft communications and reporting system |
| ACC | area control centre |
| AFCS | automatic flight control system |
| AFM | Canadair Regional Jet Airplane Flight Manual |
| agl | above ground level |
| AOA | angle of attack |
| AOM | CL-65 Airplane Operating Manual (Air Canada) |
| asl | above sea level |
| AST | Atlantic standard time |
| ATC | air traffic control |
| CL | coefficient of lift |
| CARs | Canadian Aviation Regulations |
| CASSs | Commercial Air Service Standards |
| CBAA | Commercial & Business Aviation Advisory Circular |
| CVR | cockpit voice recorder |
| DA/H | decision altitude/height |
| DME | distance measuring equipment |
| EICAS | Engine Indicating and Crew Alerting System |
| ELT | emergency locator transmitter |
| EST | eastern standard time |
| FCOM | Flight Crew Operating Manual |
| FDR | flight data recorder |
| FMS | flight management system |
| FOM | Flight Operations Manual (Air Canada Publication 550) |
| FSS | Flight Service Station |
| G | unit of acceleration equal to the force of gravity |
| IAR | Institute of Aviation Research (division of National Research Council of Canada) |
| IAS | indicated airspeed |
| ICAO | International Civil Aviation Organization |
| IFR | instrument flight rules |
| IFT | instrument flight test |
| ILS | instrument landing system |
| JBI | James brake index |
| kg | kilograms |
| kHz | kilohertz |
| KIAS | knots indicated airspeed |
| MDA | minimum descent altitude |
| MDA/H | minimum descent altitude/height |
| mg | milligram |
| MHz | megahertz |
| NDB | non-directional beacon |
| NOTAM | Notice to Airmen |
| NRC | National Research Council of Canada |
| PA | passenger address |
| PF | pilot-flying |
| PMA | pilot monitored approach |
| PNF | pilot-not-flying |
| PPC | pilot proficiency check |
| QETE | Quality Engineering Test Establishment |
| RCMP | Royal Canadian Mounted Police |
| RVR | runway visual range |
| sm | statute mile |
| SOPs | standard operating procedures |
| SPS | stall protection system |
| TCAS | traffic-alert collision-avoidance system |
| TOGA | take-off and go-around |
| TSB | Transportation Safety Board of Canada |
| UTC | coordinated universal time |
| V2 | take-off safety speed |
| VAPP | (normally) approach speed with one engine inoperative |
| VFR | visual flight rules |
| VHF | very high frequency |
| VOR | very high frequency omni-directional range |
| VREF | approach speed - landing reference speed in the normal landing configuration |
| WS | wing station |
| º | degree |
1. Referred to as CL-65, Canadair Regional Jet (CRJ), and CL600-2B19 in various publications, the aircraft is hereafter referred to as the CL-65, unless quoting.
2. See Appendix E - Glossary for abbreviations and acronyms.
3. All times are AST (coordinated universal time minus four hours) unless otherwise noted.
4. Calculations by Bombardier Inc.
5. VREF is a landing reference speed based on the aircraft's weight and configuration.
6. The Factor, for Air Canada CL-65 operations, is 5 knots plus half of the wind gust that exceeds 10 knots. The Factor is always a minimum of 5 knots and normally a maximum of 10 knots.
7. Although weather information is normally given in UTC, for ease of understanding, all times have been changed to AST; AST = UTC minus 4 hours.
8. Transport Canada and NAV CANADA both informed the TSB that an incorrect observation entry for Fredericton was made to the weather information system. With a temperature of -8ºC, what was reported as fog should have been reported, in the current weather reporting system, as freezing fog.
9. Graphical plot of atmospheric temperature and entropy.
10. A JBI of 0 to .05 would be equivalent to the braking action while hydroplaning, while a bare and dry runway would have a JBI of .8 to 1.0.
11. Includes persons and groups from ICAO Flight Recorder (FLIREC) Panel, International Society of Air Safety Investigators, and European Civil Aviation Electronics (EUROCAE), an organization, with world-wide participation, setting performance specification guidelines for flight recorders.
12. Transportation Safety Board LP 41/98 - Bending Strength of Crash Axe and Pry Bar. It was found that the pry bar had a bending strength 1.6 times that of the axe.
13. Transport Canada's interpretation of the term "practical training" does not mean hands-on; however, the TSB interpretation is that practical training, as alluded to in CAR 705.126, CASS 725.124, and CASS 725.126, means hands-on, where practicable.
14. Sky Check service allows passengers, while boarding, to place their carry-on-baggage on a trolley at the bottom of the stairs for stowage in the baggage area. On arrival, that baggage is placed on a trolley at the foot of the stairs for pick-up by the passengers.
15. FDR data indicate that the aircraft was 0.20 dot right of the ILS localizer.
16. The rate of descent for a three-degree glide path would normally be between 650 and 800 feet per minute, depending on approach ground speed.
17. Nominal approach thrust would be 65-68% N1.
18. It should be noted that this is a direction to instructor pilots who conduct airborne training and is meant as a safe training practice, not as an operating procedure.
19. A nominal thrust setting for go-around in the CL-65 aircraft.
20. For CL-65 operations, Air Canada always uses the 15% wet runway factor in calculating destination runway length required as an additional safety margin, whether or not the runway is expected to be wet.
21. Canadair Regional Jet, Flight Crew Training Manual, Chapter 3.6, Page 30.
22. This statement, if read exactly as written, means that both conditions have to be met for the RVR to be below minimum RVR. For example, with RVR A' = 800 feet and RVR B' = 600 feet, the RVR would not be below minimum RVR. It is the belief of the TSB, and now confirmed by Transport Canada, that this is not the intent of the regulation, and it will be amended.
23. Aircraft have limitations on the minimum height at which the autopilot may be engaged; for some aircraft, this height may be above the decision height.