AD/B737/301 Amdt 2 - Spoiler Actuator Jamming (Cth)

AIRWORTHINESS DIRECTIVE On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/B737/301 Amdt 1 and issues the following AD under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Boeing 737 Series Aeroplanes AD/B737/301 Amdt 2 Spoiler Actuator Jamming 11/2007

Applicability: Model 737-800 series aeroplanes, serial numbers 32685, 34277 through 34281 inclusive, 34474, 34475, 34654 through 34656 inclusive, 34690, 34948, 34949, 35091 through 35093 inclusive, 35103, 35134, 35176 through 35183 inclusive, 35330, 35331, 35558, 35559, and 36323 through 36328 inclusive. Requirement: 1. Visually check the spoilers to determine spoiler position, in accordance with Boeing 737 Flight Crew Operations Manual Bulletin No. TBC-67, dated 5 March 2007. If all spoilers are determined to be properly stowed, no further action is necessary in accordance with this Requirement. The visual checks may be performed by qualified personnel or flight crew and must be entered into the aircraft records showing compliance with this AD. 2. If, during the Requirement 1 visual check, any spoiler is found to be improperly stowed (in the up position with the speedbrake handle in the down position), replace the flight spoiler actuator with a flight spoiler actuator, having part number (P/N) P665A0001-01 or higher dash number, in accordance with a method approved by the Manager, Seattle Aircraft Certification Office (ACO), United States Federal Aviation Administration (FAA). The "Flight Spoiler Actuator Removal" task and the "Flight Spoiler Actuator Installation" task in Chapter 27-61-51 of the 737/600/700/800/900 Aircraft Maintenance Manual (AMM) are approved methods for the replacement (removal and installation) of the flight spoiler actuator. 3. Carry out an operational test of the speedbrake control system in accordance with a method approved by the Manager, Seattle ACO. The "Speedbrake Control System Operational Test" specified in Chapter 27-62-00 of the 737/600/700/800/900 AMM is one approved method for the operational test of the speedbrake control system. Note 1: The optional installation of flight spoiler actuator, P/N P665A0001-01 or higher dash number, in all eight flight spoiler positions ends the need for the Requirement 1 repetitive visual checks and the Requirement 3 operational checks.