Airworthiness Directive · Amendment 39-21882 · Fuel
Bombardier, Inc., Airplanes
This AD applies to Bombardier, Inc., Model CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes, certificated in any category, serial numbers 5301 through 5665 inclusive, 5701 through 5990 inclusive, and 6050 through 6163 inclusive.
The FAA is superseding Airworthiness Directive (AD) 2017-22- 06, which applied to certain Bombardier, Inc., Model CL-600-2B16 (601- 3A, 601-3R, and 604 Variants) airplanes. AD 2017-22-06 required repetitive inspections for fuel leakage at the engine and auxiliary power unit (APU) fuel pumps, and related investigative and corrective actions if necessary. This AD retains the requirements of AD 2017-22- 06, and requires an inspection of the APU, repair if necessary, and modification of the engine electrical fuel pump (EFP) installation. This AD also adds airplanes to the applicability. This AD was prompted by reports of fuel leaks from the electrical connectors and conduits of the engine and APU EFP cartridge/canister, and the development of additional actions to address the root cause of the fuel leaks. The FAA is issuing this AD to address the unsafe condition on these products.
This paragraph restates the requirements of paragraph (g) of AD 2017-22-06, with revised service information and method of compliance provisions. For Model CL-600-2B16 airplanes having serial numbers 5301 through 5665 inclusive: Within 600 flight hours or 12 months, whichever occurs first after November 30, 2017 (the effective date of AD 2017-22-06), do the inspections specified in paragraphs (g)(1) through (3) of this AD, and do all applicable corrective actions, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 604-28-022, dated October 19, 2015, or Bombardier Service Bulletin 604-28-022, Revision 3, dated August 31, 2018. Do all applicable corrective actions before further flight. Repeat the inspections at intervals not to exceed 600 flight hours or 12 months, whichever occurs first. As the effective date of this AD, use Bombardier Service Bulletin 604-28-022, Revision 3, dated August 31, 2018, only.
(1) Do a general visual inspection for traces of fuel coming from the right-hand engine boost pump at the location of the belly fairing screw (FS412, BL 0.0).
(2) Do a general visual inspection for traces of fuel coming from the left-hand engine boost pump at the location of the belly fairing screw (FS412, BL 0.0).
(3) Do a general visual inspection for traces of fuel coming from the EFP electrical wiring conduit outlet at the lower body fairing area for engine EFPs and at the right-hand landing light compartment for the APU EFP.
This paragraph restates the requirements of paragraph (h) of AD 2017-22-06, with revised service information and compliance method provisions. For Model CL-600-2B16 airplanes having serial numbers 5701 through 5955 inclusive, 5957, 5960 through 5966 inclusive, 5968 through 5971 inclusive, and 5981: Within 600 flight hours or 12 months, whichever occurs first after November 30, 2017 (the effective date of AD 2017-22-06), do the inspections specified in paragraphs (h)(1) through (3) of this AD, and do all applicable related investigative and corrective actions, in accordance with the Accomplishment Instructions in Bombardier Service Bulletin 605-28-010, dated October 19, 2015, or Bombardier Service Bulletin 605-28-010, Revision 3, dated August 31, 2018. Do all applicable related investigative and corrective actions before further flight. Repeat the inspections at intervals not to exceed 600 flight hours or 12 months, whichever occurs first. As of the effective date of this AD, use Bombardier Service Bulletin 605-28-010, Revision 3, dated August 31, 2018, only.
(1) Do a general visual inspection for traces of fuel coming from the right-hand engine boost pump at the location of the belly fairing screw (FS412, BL 0.0).
(2) Do a general visual inspection for traces of fuel coming from the left-hand engine boost pump at the location of the belly fairing screw (FS412, BL 0.0).
(3) Do a general visual inspection of the right-hand landing light compartment for traces of fuel coming from the APU EFP.
For the airplanes identified in figure 1 to paragraph (i) of this AD: At the applicable compliance time specified in figure 1 to paragraph (i) of this AD, do a general visual inspection for any fuel leak from the engine and APU EFP electrical wiring conduit outlets, in accordance with the Accomplishment Instructions of the applicable service information specified in figure 1 to paragraph (i) of this AD. If any fuel leak is found during the general visual inspection, before further flight, correct the fuel leak in accordance with the Accomplishment Instructions of the applicable service information specified in figure 1 to paragraph (i) of this AD. Thereafter, repeat the general visual inspection at intervals not to exceed 600 flight hours or 12 months, whichever occurs first.
Within 60 months after the effective date of this AD: Do a detailed visual inspection of the APU for any damage or deformations, and modify the engine EFP installation, in accordance with the Accomplishment Instructions of the applicable service information specified in figure 2 to paragraph (j) of this AD. If any damage or deformations are found during the detailed visual inspection, before further flight, do the repair in accordance with the Accomplishment Instructions of the applicable service information specified in figure 2 to paragraph (j) of this AD.
Where service information identified in this AD specifies to submit certain information to the manufacturer, this AD does not include that requirement.
Accomplishing the actions required by paragraph (j) of this AD terminates all requirements of this AD.
