Airworthiness Directive · Amendment 39-11904 · Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and EMB-145 Series Airplanes
Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135 and EMB-145 Series Airplanes
Superseded. A later AD replaced this one: AD 2000-25-05. Comply with the one in force.
Model EMB-135 and EMB-145 series airplanes, as listed in Embraer Alert Service Bulletin S.B. 145-28-A014, dated August 25, 2000; certificated in any category.
Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (c) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.
This amendment adopts a new airworthiness directive (AD) that is applicable to certain EMBRAER Model EMB-135 and EMB-145 series airplanes. This action requires a one-time inspection of the coupling hinge and locking fastener of the Gamah couplings of the fuel system tubing located in the wing dry bay to detect discrepancies, and follow- on corrective actions. This action is necessary to prevent failure of the rivets of the Gamah couplings and consequent separation of a Gamah coupling, which could result in fuel leakage and consequent fire in or around the wing. This action is intended to address the identified unsafe condition.
To prevent failure of the rivets attaching the Gamah coupling hinge to the fuel system tubing and consequent separation of the coupling, which could result in fuel leakage and consequent fire in or around the wing, accomplish the following:
(a) Perform a one-time general visual inspection of the hinge and locking fastener of the Gamah couplings of the fuel system tubing located in the wing dry bay to detect discrepancies (including coupling separation, and loose rivets on the coupling hinge or locking fastener attaching points), in accordance with Embraer Alert Service Bulletin S.B. 145-28-A014, dated August 25, 2000; at the times specified in paragraphs (a)(1) and (a)(2) of this AD, as applicable. If no discrepancies are detected, secure the Gamah couplings with locking wire in accordance with the alert service bulletin.
(1) For airplanes having serial numbers 145004 through 145103 inclusive; 145105 through 145121 inclusive; 145123 through 145139 inclusive; 145141 through 145153 inclusive; 145155 through 145176 inclusive: Within 400 flight hours after the effective date of this AD.
(2) For airplanes having serial numbers 145177 through 145189 inclusive; 145191 through 145230 inclusive; 145232 through 145251 inclusive; 145253 through 145255 inclusive; 145258 through 145262 inclusive; 145264 through 145293 inclusive; 145295, 145296, and 145298 through 145300 inclusive: Within 50 flight hours after the effective date of this AD.
(b) If any discrepancies (including coupling separation, and loose rivets on the coupling hinge or locking fastener attaching points) are detected after accomplishment of the inspection required by paragraph (a) of this AD: Before further flight, replace any affected Gamah couplings and secure the Gamah couplings with locking wire in accordance with Embraer Alert Service Bulletin S.B. 145-28-A014, dated August 25, 2000. Accomplishment of this paragraph terminates the requirements of this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
