Document ID: chunk:federal_register_of_legislation:F2006B10446:body:0:p2
Version: federal_register_of_legislation:F2006B10446
Segment Type: other
Provision Reference: 
Character Range: 2864–5932

For the purposes of this Directive, a general visual inspection is defined as: "A visual examination of an interior or exterior area, installation, or assembly to detect obvious damage, failure, or irregularity. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight, or droplight, and may require removal or opening of access panels or doors. Stands, ladders, or platforms may be required to gain proximity to the area being checked."

             5.    If no corrosion of the drain valves is detected during the Requirement 4 inspection, accomplish either of the following actions:

                 1. perform a leak test in accordance with SB 34-3207; or

b.         modify any inoperative valve in accordance with SB 34-3282.

                Modification of ALL the drain valves in accordance with SB 34-3282 constitutes terminating action for the requirement to perform repetitive leak tests.

             6.    If any drain valve is found to be corroded during the Requirement 4 inspection, inspect the connecting tubing for corrosion and replace any corroded valve or tubing with a new or serviceable valve or tubing in accordance with SB 34-3207. Then accomplish either of the following actions:

                 1. perform a leak test in accordance with SB 34-3207; or

b.         modify any replaced drain valve in accordance with SB 34-3282.

                Modification of ALL the drain valves in accordance with SB 34-3282 constitutes terminating action for the requirement to perform repetitive leak tests.

           Note 2: FAA AD 2000-22-03 Amdt 39-11949 refers.

           Compliance:  For Requirement 1 - Within 300 hours time in service (TIS) after the effective date of this Directive and, if all valves are found to be operating correctly, repeat the leak test at intervals not to exceed 300 hours TIS until all drain valves are modified.

           For Requirement 2 - Before further flight and, if action specified in either Requirement 2.b. or 2.c. is accomplished, repeat the leak test at intervals not to exceed 300 hours TIS until all drain valves are modified.

           For Requirement 3 - Within 300 hours TIS after Requirement 2.a. was accomplished. For Requirement 4 - Before further flight.

               For Requirement 5 - Before further flight and thereafter repeat the leak check at intervals not to exceed 300 hours TIS until all drain valves are modified.

               For Requirement 6 - Before further flight and thereafter repeat the leak check at intervals not to exceed 300 hours TIS until all drain valves are modified.

               This Airworthiness Directive becomes effective on 25 January 2001.

               Background:  This Directive requires leak checks and inspections for corrosion of the pitot/static and stall vent drain valves and, if necessary, replacement of certain components.
               These actions are intended to prevent erroneous altimeter and airspeed indications due to plugged or taped pitot/static