AIRWORTHINESS DIRECTIVE
CAA-AD-026/2001R1
Supersedes CAA-AD-026/2001
Date of issue: July 17, 2001
AIRCRAFT - AIRCRAFT FLIGHT MANUAL - PERFORMANCE DATA
(ATA 72)
Applicability: AIRBUS INDUSTRIE A310 and A300-600
aircraft, models A310-324, A310-325, A300 B4-622 and A300 B4-622R (equipped
with Pratt & Whitney engines PW 4000), all serial numbers, except for
aircraft fitted with current production FB2C fan blades (Phase 3) on both
engines.
Note: Aircraft on which AIRBUS INDUSTRIE
modification No. 10925 has been embodied are equipped with phase 3 engines, and
are not subject to the requirements of this Airworthiness Directive (AD).
Effective date: September 06, 2001
Compliance: Required as indicated in DGAC AD 2001-086(B) R1.
Remarks: The compliance of
this AD must be recorded in Aircraft Logbook, where applicable the requirements
of this AD must be integrated into Aircraft Technical Documentation. Address
inquiries concerning this AD to: Civil Aviation Authority, Airworthiness
Division, Ruzyne Airport, 160 08 Prague 6, Czech Republic, tel: 420 2 33320922,
fax: 420 2 20562270.
Ing. Pavel MATOUŠEK
Director of
Airworthiness Division
CAA CZ
DGAC AD No.:
2001-086(B) R1
AIRBUS INDUSTRIE
A310 and A300-600 aircraft
A310 and A300-600 aircraft equipped with PW 4000 engines - Performance data (ATA 72)
APPLICABILITY:
AIRBUS INDUSTRIE A310 and A300-600 aircraft, models
A310-324, A310-325, A300 B4-622 and A300 B4-622R (equipped with Pratt &
Whitney engines PW 4000), all serial numbers, except for aircraft fitted with
current production FB2C fan blades (Phase 3) on both engines.
Note: Aircraft on which AIRBUS INDUSTRIE modification
No. 10925 has been embodied are equipped with phase 3 engines, and are not
subject to the requirements of this Airworthiness Directive (AD).
REASONS:
Some engines of the PW 4000 series fitted with the
early production standards of fan blades (Phase 0/1 - FB2B or FB2T) do not
produce the level of thrust indicated in the Flight Manual (AFM).
This thrust shortfall, due to the erosion of the fan
blade leading edge, results in acceleration and climb performance lower than
those specified in the AFM.
The aim of
Revision 1 of this Airworthiness Directive (AD) is to introduce a Pratt &
Whitney Service Bulletin as an Alternative Means of Compliance (AMOC) in
paragraph ACTIONS.
ACTIONS:
The following actions are rendered mandatory from the
effective date of this AD.
From the
effective date of this AD at original issue, unless already accomplished:
- introduce the following Temporary Revisions into the
A310 and A300-600 Flight Manuals:
- A310 Flight Manual Temporary Revision 5.03.00/01
- A310 Flight Manual Temporary Revision 5.03.00/02
- A300-600 Flight Manual Temporary Revision 5.03.00/01
which incorporate the necessary performance
adjustments.
or
- Perform a
restoration of the fan blades leading edge contour every 450 engine cycles in
accordance with one of the procedures and with the instructions of Pratt &
Whitney Service Bulletin PW4ENG 72-731, with the following constraints:
- The operator
must put in place a means to record cycle numbers for individual blades. If a
fan rotor is assembled with blades that have mixed cycles, the rotor sets
assumes the highest number of cycles of any blade in the rotor.
- Additionally,
if Pratt & Whitney Service Bulletin PW4ENG 72-732 is used to restore the fan
blades leading edge contour:
·
Initial heavy erosion removal using the motorized tool
shall be accomplished by a Pratt & Whitney special team. Use of the
motorized tool either on wing or off wing is restricted to a Pratt &
Whitney team.
·
Further hand tool scrape procedure can only be done by
operators who have been trained by a Pratt & Whitney team.
Note: Knowing that this AD is not applicable to
aircraft fitted with FB2C (Phase 3) fan blades on both engines, the operators
of these aircraft, who have already introduced the above-referenced AFM
Temporary Revisions (T.R.s), can remove these T.R´s.
REF.:
- A310 Flight Manual Temporary Revision 5.03.00/01
- A310 Flight Manual Temporary Revision 5.03.00/02
- A300-600 Flight Manual Temporary Revision 5.03.00/01
- Pratt &
Whitney Service Bulletins:
- PW4ENG 72-731
- PW4ENG 72-732
(All later
approved revision of these SBs is acceptable)
This Revision 1
replaces original AD 2001-086(B) dated March 07, 2001
EFFECTIVE DATES:
Original AD: MARCH 31, 2001
Revision 1: JULY
07, 2001