31 July 2011 C1 CIVIL AVIATION DEPARTMENT HONG KONG ...

4 Details of the operators slide deployment programme should be included in theApproved Maintenance Programme or Schedule.5 Every operator should define its own pass/fail criteria which should be accepted bythe Director-General. The pass/fail criteria should be based on anyrecommendations made by the aircraft or slide manufacturer and would be expectedto include at least the following as failures:• Failure of the automatic deployment system (i.e. manual inflation required);• Failure of the door to fully open;• Door assist failure (if fitted);• Failure to fully inflate;• Failure to fully inflate within 10 seconds (unless otherwise specified by themanufacturer). Timing is from when the door is initially actuated until the slideis deployed in an useable state;• Complete failure of slide lights to illuminate.All the above failures must be reported to the Director-General using the mandatoryoccurrence reporting (MOR) scheme and to the aircraft type certificate holder.6 To assist in the slide deployment failure investigation, unless otherwise agreed by theDirector-General, all slide deployments must be recorded by video and recordings offailed deployments should be held for one year or until any MOR or investigation intothe failure has been closed, whichever occurs later. A copy should be madeavailable to the Director-General on request.7 All slide deployment failures must be investigated to determine the cause of failureand action taken to prevent similar occurrences. The type certificate holder andescape slide manufacturer should be kept informed of failure investigations andprovide assistance where possible. If there are either high levels of slide failures orslide failure causes cannot be determined it may be necessary, in conjunction with theDirector-General to carry out further deployment tests, increase the paragraph 3.2sampling size or remove Minimum Equipment List alleviation until a satisfactorylevel of reliability is achieved.8 For each deployment test the door / slide position, slide part number, pass or failresult, date of manufacture of the slide, failure mode and failure cause should berecorded. Operators should forward a summary of slide deployment testing atregular intervals for each aircraft type to the Director-General. This summaryshould include the following information: Number of aircraft in fleet, number ofdeployments carried out and overall pass rate for fleet.31 May 2003 AN-12A16 P.2