Incidente com porta do porão de carga de um EMB-170

[jambockrs]

Meus prezados:
A FAA emitiu uma notificação a ANAC, Embraer, proprietários e operadores dos Embraer 170/190 a respeito de um incidente ocorrido com a porta do porão de cargas de um Embraer 190. Ela se abriu durante a decolagem e a investigação sugeriu algumas alterações.
Segue o link abaixo e parte da notificação.
http://www.airweb.faa.gov/Regulatory_an ... enDocument
ISSUE DATE: March 19, 2007
AD 2007-06-53; Docket No. FAA-2007-27616; Directorate Docket No. 2007-NM-052-AD
Emergency airworthiness directive (AD) 2007-06-53 is sent to all owners and operators of Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 and ERJ 190 airplanes.
Background
The FAA received a report that the aft cargo door of a Model ERJ 190 airplane opened in flight just after takeoff. The airplane returned to the departure airport and landed without incident. We advised the Agência Nacional de Aviação Civil (ANAC), which is the airworthiness authority for Brazil, of the report and worked closely with the ANAC to assess the safety implications of the report. The assessment of the event indicated that the door was not fully closed when the airplane took off. Inspection of the airplane revealed that the door frame lateral roller fitting was cracked and the roller fitting cover plate was distorted. The roller fitting cover plate distortion caused a malfunction in the door position indication system. A similar situation was found on the forward cargo door on a Model ERJ 170 airplane. In that instance, the problem was discovered by ground personnel, and the door was secured prior to takeoff. The cargo door design is the same for the Model ERJ 190 and ERJ 170 airplanes. Therefore, an unsafe condition may exist on all EMBRAER Model ERJ 170 and ERJ 190 airplanes. We are issuing this AD to prevent a cargo door from opening during flight; which could lead to structural failure or loss of control.
Explanation of Relevant Service Information
EMBRAER has issued Alert Service Bulletins 170-52-A036 (for Model ERJ 170 airplanes) and 190-52-A018 (for Model ERJ 190 airplanes), both dated March 12, 2007. The alert service bulletins describe the following procedures:
• Removal of the roller fitting cover plate;
• A one-time visual inspection of the forward and aft cargo doors to detect signs of interference between the lock handle and the aft edge liner assembly;
• Rework of the aft edge liner assembly, which must be done immediately if there are signs of interference, and may be deferred for a specified time if there are no signs of interference;
• A one-time visual inspection of the forward and aft cargo doors to detect signs of damage of the lateral roller fitting; and
• Immediate replacement of any damaged fitting with one having the same part number.
The ANAC mandated the actions in the alert service bulletins and issued Brazilian airworthiness directives 2007-03-01 and 2007-03-02, both effective March 16, 2007, to ensure the continued airworthiness of these airplanes in Brazil.
The alert service bulletins refer to EMBRAER Service Bulletins 170-50-0006 and 190-50-0006 as additional sources of service information for removing the roller fitting cover plate and reworking the aft edge liner assembly. These service bulletins are currently at Revision 01, dated March 13, 2007.
FAA’s Determination and Requirements of the Rule
These airplanes are manufactured in Brazil and are type certificated for operation in the United States under the provisions of section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and the applicable bilateral airworthiness agreement. Pursuant to this bilateral airworthiness agreement, the ANAC has kept the FAA informed of the situation described above. We have examined the ANAC’s findings, evaluated all pertinent information, and determined that we need to issue an AD for products of this type design that are certificated for operation in the United States.
Therefore, we are issuing this AD to prevent a cargo door from opening during flight; the door could detach from and strike the airplane and result in structural damage and possible loss of control of the airplane. This AD requires accomplishing the actions specified in the service information described previously. This AD also requires repetitively verifying, before each flight, the correct closure of the forward and aft cargo doors, and reporting positive inspection results to EMBRAER.
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