Eurocopter AS 332 (Super Puma) Series Helicopters: AD/S-PUMA/57
Amdt 1 Tail Servo-Control 11/2005 TX
Applicability: AS 332 L,
L1, C, C1 and AS 332 L2 helicopters fitted with tail servo-controls
part number (P/N) SC7251 before amendment J or P/N SC7270 before
amendment F.
Requirement: 1. If not previously accomplished
in accordance with AD/S-PUMA/57, perform a one time manual check
for absence of axial play of the two levers along the distributor
shafts of the tail servo-control in accordance with the
instructions described in paragraph 2.B.3 of Eurocopter AS332 ASB
67.00.31.
2. For installed servo-controls which have accumulated more than
535 hours times in service (TIS) since new at the effective date of
this Directive, carry out the tightening torque check detailed in
paragraph 2.B.2 of Eurocopter AS332 ASB 67.00.31.
3. Manually check for absence of axial play of the two control
levers along the distributor shafts of the tail servo-control, in
accordance with paragraph 2.B.3. of Eurocopter AS332 ASB
67.00.31.
4. In case of axial play, replace the servo-control before
resuming flights, in accordance with paragraph 2.B.3. of Eurocopter
AS332 ASB 67.00.31.
5. For tail servo controls held as spares carry out the
tightening torque check detailed in paragraph 2.B.2 of Eurocopter
AS332 ASB 67.00.31.
Note: DGAC AD F-2005-137 EASA approval No.
2005-6119 dated 27 July 2005 refers. This Directive supersedes
UF-2004-197.
Compliance: 1. Remains unchanged as detailed in
the original issue of this Directive. For installed servo-controls
which have accumulated more than 535 hours time in service (TIS)
since new; Within 15 hours TIS after the effective date of the
original issue of this Directive. For installed servo-controls
which have accumulated less than 535 hours TIS since new; No later
than 550 hours TIS since new.
2. No later than within the 110 flying hours as from the
effective date of this AD.
3. For installed servo-controls which have accumulated more than
535 hours time in service (TIS) since new at the effective date of
this Directive; No later than within a period of 135 to 165 flying
hours following the check detailed in Requirement 2 of this
Directive has been completed. For installed servo-controls which
have accumulated less than 535 hours TIS since new at the effective
date of this Directive; No later than within a period of 135 to 165
flying hours following the torque check detailed in Requirement 2
of this Directive has been completed.
4. Before further flight following the effective date of this
Directive.
5. Before installation in a helicopter after the effective date
of this Directive. This Amendment becomes effective on 10 September
2005.
Background: The Direction
Générale de l’Aviation Civile of France has
advised that following removal of a tail servo-control for repair,
it was reported that a control lever had slipped along the shaft of
one of the distributors. Investigation revealed that the control
lever could have totally separated from the distributor shaft,
which could result in tail servo-control failure. The original
issue of this Directive required a one time manual inspection to
ensure the integrity of the servo-control assembly.
This amendment maintains the one time inspections, introduces
follow up inspections and torque checks, and includes actions to be
performed if tail servo-controls fail those checks detailed in this
Directive. The original issue of this Directive became effective on
7 January 2005.
NTSB Prelim: Lee Aviation LLC JA30 SuperStol
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