Attention:
Operators and Maintainers of all Bombardier Inc. Models CL-600-2B16 (604 Variant) – Challenger 605
CL-600-2B16 Challenger 605, aircraft serial numbers:
5752 to 5754, 5756, 5757, 5760 to 5762, 5764 to 5766, 5768 to 5770, 5772 to 5774, 5776 to 5780, 5782 to 5787, 5790, 5791, 5793, 5794, 5796, 5799, 5800, 5802, 5805 to 5814, 5816, 5818 to 5820, 5823 to 5829, 5831 to 5841, 5843, 5844, 5846 to 5851, 5853, 5856, 5857, 5859 to 5863, 5865 to 5874, 5876, 5879 to 5881, 5883 to 5894, 5896 to 5898, 5900 to 5906, 5908 to 5911, 5913 to 5919, 5921 to 5938, 5940 to 5947, 5949 to 5969, 5975, 5976, 5980, 5982, 5983, 5985 and 5988.
| File Classification No.: | Z 5000-35 |
|---|---|
| RDIMS No.: | 20473252 |
| Document No.: | CASA 2024-12 |
| Issue No.: | 01 |
| Effective Date: | 2024-11-21 |
Purpose:
The purpose of this CASA is to provide awareness to Operators and Maintenance personnel of a potential risk of electrocution/electric shock when servicing the potable water tank on the Bombardier Inc. (BA) model CL-600-2B16 (604 Variant), Challenger 605.
Background:
Two incidents have been reported in which maintenance personnel received electric shocks while carrying out maintenance on the Challenger 605. The maintenance staff were injured when they came in contact with an exposed electrical connection on the baggage compartment heater thermostat S1001HM (see Figure 1).
The terminals of the Baggage Compartment Heater thermostat are located on the water tank FWD access door, which is normally only accessed by maintenance personnel during maintenance activities.
BA has issued recommended service bulletin (SB) 605-21-006, which provides instructions to apply adhesive sealant on the end terminals of the baggage compartment heater thermostat, Part Number 2511L010−1658 (Ident S1001HM), installed on the water system access panel door.
Figure 1: CL605 - Unprotected Terminals
Figure 2: CL605 - Protected Terminals
Figure 3
Recommended Action:
For CL-600-2B16 – Challenger 605, aircraft serial numbers:
5752 to 5754, 5756, 5757, 5760 to 5762, 5764 to5766, 5768 to 5770, 5772 to 5774, 5776 to 5780, 5782 to 5787, 5790, 5791, 5793,5794, 5796, 5799, 5800, 5802, 5805 to 5814, 5816, 5818 to 5820, 5823 to 5829, 5831 to 5841, 5843, 5844, 5846 to 5851, 5853, 5856, 5857, 5859 to 5863, 5865 to 5874, 5876, 5879 to 5881, 5883 to 5894, 5896 to 5898, 5900 to 5906, 5908 to 5911, 5913 to 5919, 5921 to 5938, 5940 to 5947, 5949 to 5969, 5975, 5976, 5980, 5982, 5983, 5985 and 5988.
It is recommended that operators incorporate SB 605-21-006 across their affected fleet and for aircraft model maintainers to exercise maximum awareness and caution while servicing the model Challenger 605 potable water tanks.
Contact Office:
For more information concerning this issue, contact a Transport Canada Centre; or contact Philip Lynch, Continuing Airworthiness in Ottawa, by telephone at 1-888-663-3639 or by e-mail at TC.CAWWEBFEEDBACK-retroactionWebMDLN.TC@tc.gc.ca.
Original Signed By
Jenny Young
Chief, Continuing Airworthiness
National Aircraft Certification
Electrical Shock Hazard
(PDF, 387 KB)
The Transport Canada Civil Aviation Safety Alert (CASA) is used to convey important safety information and contains recommended action items. The CASA strives to assist the aviation industry's efforts to provide a service with the highest possible degree of safety. The information contained herein is often critical and must be conveyed to the appropriate office in a timely manner. The CASA may be changed or amended should new information become available.