Airworthiness Directive · Amendment 39-18968 · Pneumatic
Bombardier, Inc., Airplanes
This AD applies to Bombardier, Inc., Model CL-600-2E25 (Regional Jet Series 1000) airplanes, certificated in any category, serial numbers 19001 through 19048 inclusive.
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2E25 (Regional Jet Series 1000) airplanes. This AD requires modifying the bleed-air duct and detection system; and revising the maintenance or inspection program, as applicable. This AD was prompted by a report of a possibility that the shrouds of the high pressure bleed air ducts could deteriorate and their maximum permitted leakage rate could be exceeded. We are issuing this AD to address the unsafe condition on these products.
At the earlier of the times specified in paragraphs (g)(1) and (g)(2) of this AD: Modify the bleed-air duct and detection system, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 670BA-36-022, Revision B, dated December 20, 2016.
(1) Within 6,600 flight hours or 32 months, whichever occurs first after the effective date of this AD.
(2) Within the next 10,000-flight-hours scheduled maintenance check after the effective date of this AD.
Within 30 days after the effective date of this AD: Revise the maintenance or inspection program, as applicable, by incorporating the service information specified in figure 1 to paragraph (h) of this AD. The initial compliance time for tasks 28-12-00-601 and 28-12-00-602 is at the later of the applicable times specified in the service information specified in figure 1 to paragraph (h) of this AD, or within 30 days after the effective date of this AD, whichever occurs later. The initial compliance times for tasks 25-85-00-101, 36-20-00-101, and 36-20-00-102 are specified in Figure 2 to paragraph (h) of this AD. When these temporary revisions (TRs) have been included in general revisions of the maintenance requirement manual (MRM), the general revisions may be inserted in the MRM, provided the relevant information in the general revision is identical to the TRs specified in figure 1 to paragraph (h) of this AD.
| Temporary revision | Task No. | Maintenance requirements manual (MRM) part 2 section | Revision date |
|---|---|---|---|
| ALI-0553 | 25-85-00-101 | 1-25 | August 19, 2016. |
| ALI-0554 | 36-20-00-101 | 1-36 | August 19, 2016. |
| ALI-0555 | 36-20-00-102 | 1-36 | August 19, 2016. |
| ALI-0556 | 28-12-00-601 | 4-28 | August 19, 2016. |
| ALI-0557 | 28-12-00-602 | 4-28 | August 19, 2016. |
| Task No. | Initial compliance time (whichever occurs later) | |
| 25-85-00-101 | Before the accumulation of 8,000 total flight hours | Within 30 days after the effective date of this AD. |
| 36-20-00-101 | Before the accumulation of 10,000 total flight hours | Within 30 days after the effective date of this AD. |
| 36-20-00-102 | Before the accumulation of 10,000 total flight hours | Within 30 days after the effective date of this AD. |
After the maintenance or inspection program has been revised, as required by paragraph (h) of this AD, no alternative actions (e.g., inspections) or intervals may be used unless the actions or intervals are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (k)(1) of this AD.
