Airworthiness Directive · Amendment 39-21420 · Lights
Bombardier, Inc., Airplanes
This AD applies to Bombardier, Inc., Model BD-700-1A10 airplanes, certificated in any category, serial numbers 9002, 9003, 9011, 9016, 9020, 9022 through 9025 inclusive, 9029, 9031, 9032, 9036, 9039 through 9044 inclusive, 9046 through 9058 inclusive, 9060 through 9065 inclusive, 9067 through 9081 inclusive, 9083 through 9106 inclusive, 9108 through 9122 inclusive, 9124 through 9126 inclusive, 9128, 9129, 9133, 9134, 9136 through 9139 inclusive, 9141 through 9148 inclusive, 9150, 9151, 9153, 9159, 9162, 9163, 9165, and 9169.
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-700-1A10 airplanes. This AD was prompted by a report of smoke and signs of an overheating condition from the emergency light battery (ELB) due to excessive corrosion surrounding the internal lead acid batteries, which caused an electrical short circuit that led to the smoke and overheating condition. This AD requires an inspection to determine the last replacement date of the ELB, and replacement if necessary. This AD also requires the incorporation of a new maintenance task into the existing maintenance or inspection program. The FAA is issuing this AD to address the unsafe condition on these products.
Within 15 months after the effective date of this AD, inspect the ELB to determine the last replacement date or the manufacturing date, as applicable; if during this inspection, any date is found to be 4 years or older, replace the ELB before further flight. Do the actions in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 700-33-024, dated May 13, 2019. For airplanes on which the restoration task specified in paragraph (h) of this AD was done before the effective date of this AD, the requirements of paragraph (g) of this AD are not required.
Within 60 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to include the information specified in Bombardier BD-700 Supplemental Time Limits/Maintenance Checks (STLMC) Chapter 5 task number 33-51-54-603, “Restoration of the Emergency Lighting Batteries (XL245-B Emergency Battery System),” in the Bombardier BD-700 STLMC, as specified in the applicable temporary revision identified in figure 1 to paragraph (h) of this AD. The initial compliance time for doing task 33-51-54-603 is at the applicable time specified in paragraph (h)(1) or (2) of this AD. Repeat task 33-51-54-603 thereafter at the interval specified within that task.
(1) If both ELBs were replaced at the time of compliance with paragraph (g) of this AD: Within 48 months after the ELB replacement.
(2) If neither ELB, or only one ELB, was replaced at the time of compliance with paragraph (g) of this AD: Within 48 months after the applicable date specified in paragraph (h)(2)(i) or (ii) of this AD.
(i) For each ELB, use the battery replacement date, if it is indicated.
(ii) For each ELB, use the date of manufacture, if it does not have a battery replacement date indicated.
The following temporary revisions misidentified the required restoration task as task “33-51-54-602.”
(1) Bombardier Global Express XRS BD-700 STLMC Temporary Revision 05-19032701, dated March 27, 2019.
(2) Bombardier Global Express BD-700 STLMC Temporary Revision 05-19040301, dated April 3, 2019.
(3) Bombardier Global Express BD-700 STLMC Temporary Revision 05-19040401, dated April 4, 2019.
For airplanes on which the restoration task specified as task “33-51-54-602” in the applicable temporary revision identified in paragraph (i) of this AD was done before the effective date of this AD:
(1) The actions specified in paragraph (g) of this AD are not required.
(2) The initial accomplishment of the task specified in paragraphs (h)(1) and (2) of this AD is not required.
(3) Task 33-51-54-603 must be done within 48 months after task “33-51-54-602” was accomplished, and thereafter at the intervals specified in task 33-51-54-603.
After the existing maintenance or inspection program has been revised as required by paragraph (h) of this AD, no alternative actions (e.g., inspections) and intervals may be used unless the actions and intervals are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (l)(1) of this AD.
