2024-28778. Airworthiness Directives; Bombardier, Inc., Airplanes

Estimated Costs for Required Actions

Labor cost	Parts cost	Cost per product	Cost on U.S. operators
1.5 work-hours × $85 per hour = $128	$0	$128	$14,976

Authority for This Rulemaking

Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII: Aviation Programs, describes in more detail the scope of the Agency's authority.

The FAA is issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: General requirements. Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action.

Regulatory Findings

This AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government.

For the reasons discussed above, I certify that this AD:

(1) Is not a “significant regulatory action” under Executive Order 12866,

(2) Will not affect intrastate aviation in Alaska, and

(3) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

• Air transportation
• Aircraft
• Aviation safety
• Incorporation by reference
• Safety

The Amendment

Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39—AIRWORTHINESS DIRECTIVES

1. The authority citation for part 39 continues to read as follows:

Authority: 49 U.S.C. 106(g), 40113, 44701.

§ 39.13

[Amended]

2. The FAA amends § 39.13 by adding the following new airworthiness directive:

2024-23-02 Bombardier, Inc.: Amendment 39-22881; Docket No. FAA-2024-0228; Project Identifier MCAI-2022-00599-T. ( print page 99699)

(a) Effective Date

This airworthiness directive (AD) is effective January 15, 2025.

(b) Affected ADs

None.

(c) Applicability

This AD applies to Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes, certificated in any category, serial numbers 9002 through 9998 inclusive, and 60001 through 60046 inclusive.

(d) Subject

Air Transport Association (ATA) of America Code 05, Time Limits/Maintenance Checks; 32, Landing Gear.

(e) Reason

This AD was prompted by a determination that new or more restrictive airworthiness limitations for certain brake accumulators are necessary. The FAA is issuing this AD to address brake accumulators that could surpass a life limit and fail, resulting in loss of hydraulic pressure on the associated hydraulic system, which services the main and emergency/parking brakes on the main landing gear. The unsafe condition, if not addressed, could result in reduced or total loss of available braking and a possible runway excursion.

(f) Compliance

Comply with this AD within the compliance times specified, unless already done.

(g) Maintenance or Inspection Program Revision

Within 90 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the information in the tasks specified in table 1 to paragraph (g) of this AD of Section 5-10-11, “Life Limits (Systems),” of Part 2, “Airworthiness Limitations,” of the applicable Time Limits/Maintenance Checks (TLMC) Manual. The initial compliance time for doing the tasks is at the time specified in the tasks specified in table 1 to paragraph (g) of this AD, or within 90 days after the effective date of this AD, whichever occurs later.

Table 1 to Paragraph ( g )—Applicable TLMC Manuals and Service Bulletins

Airplane model and TLMC manual	Task Number 32-43-37-101 (Discard the No. 2 Brake Accumulator, Part No. GW415-1250-1) TLMC Revision	Task Number 32-44-05-101 (Discard the No. 3 Brake Accumulator, Part No. GW415-1200-1/-3) TLMC Revision	Bombardier service bulletin number
BD-700-1A10, Bombardier Global Express TLMC, Publication No. BD-700 TLMC 1	Revision 35, dated December 19, 2023	Revision 35, dated December 19, 2023	700-32-043, Revision 02, dated March 2, 2023.
BD-700-1A10, Bombardier Global Express XRS TLMC, Publication No. BD-700 XRS TLMC 2	Revision 22, dated December 19, 2023	Revision 22, dated December 19, 2023	700-32-043, Revision 02, dated March 2, 2023.
BD-700-1A10, Bombardier Global 6000 TLMC, Publication No. GL 6000 TLMC 3	Revision 16, dated December 19, 2023	Revision 16, dated December 19, 2023	700-32-6020, Revision 02, dated March 2, 2023.
BD-700-1A10, Bombardier Global 6500 Time Limits/Maintenance Checks, Publication No. GL 6500 TLMC 4	No action required by this AD because all airplanes were delivered with this task in their maintenance or inspection program and must comply with the task as part of the approved type design	Revision 5, dated December 19, 2023	700-32-6506, Revision 02, dated March 2, 2023.
BD-700-1A11, Bombardier Global 5000 TLMC, Publication No. BD-700 TLMC 5	Revision 26, dated December 19, 2023	Revision 26, dated December 19, 2023	700-1A11-32-030, Revision 02, dated March 2, 2023.
BD-700-1A11, Bombardier Global 5000 Featuring Global Vision Flight Deck TLMC, Publication No. GL 5000 GVFD TLMC 6	Revision 16, dated December 19, 2023	Revision 16, dated December 19, 2023	700-32-5020, Revision 02, dated March 2, 2023.
BD-700-1A11, Bombardier Global 5500 TLMC, Publication No. GL 5500 TLMC 7	No action required by this AD because all airplanes were delivered with this task in their maintenance or inspection program and must comply with the task as part of the approved type design	Revision 5, dated December 19, 2023	700-32-5506, Revision 02, dated March 2, 2023.
1  For obtaining the tasks for Bombardier Global Express TLMC, Publication No. BD-700 TLMC, use Document Identification No. GL 700 TLMC.
2  For obtaining the tasks for Bombardier Global Express XRS TLMC, Publication No. BD-700 XRS TLMC, use Document Identification No. GL XRS TLMC.
3  For obtaining the tasks for Bombardier Global 6000 TLMC, Publication No. GL 6000 TLMC, use Document Identification No. GL 6000 TLMC.
4  For obtaining the task for Bombardier Global 6500 Time Limits/Maintenance Checks, Publication No. GL 6500 TLMC, use Document Identification No. GL 6500 TLMC.
5  For obtaining the tasks for Bombardier Global 5000 TLMC, Publication No. BD-700 TLMC, use Document Identification No. GL 5000 TLMC.
6  For obtaining the tasks for Bombardier Global 5000 Featuring GVFD TLMC, Publication No. GL 5000 GVFD TLMC, use Document Identification No. GL 5000 GVFD TLMC.
7  For obtaining the task for Bombardier Global 5500 TLMC, Publication No. GL 5500 TLMC, use Document Identification No. GL 5500 TLMC.