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BRITISH AEROSPACE ATT
SERVICE BULLETIN
BAE SYSTEMS,
PRESTWICK INTERNATIONAL AIRPORT, AYRSHIRE, KA9 2RW, SCOTLAND.
ATP-27-090 TITLE: _ FLIGHT CONTROLS - INSPECTION OF AILERON AND RUDDER TAB PIANO HINGES
FOR HINGE PIN SECURITY
INSPECTION
1. PLANNING INFORMATION A. Effectivity All ATP series aircraft.
B. Reason There have been two cases of unsecured piano type hinge pin migration, causing partial control restriction.
C. Description This inspection service bulletin introduces a one off inspection of the aileron tab, aileron trim tab and rudder trim tab piano hinges for security of the hinge pin.
Any piano hinge pin found in an unsecured condition is to be secured by pinching the piano hinge ends.
The tasks are as follows:
- Gain access.
- Inspect and ensure piano hinge ends are pinched.
- Pinch piano hinge ends if required.
- Test system.
- Close up.
- Amend the aircraft records.
D. Manpower 2 man-hours for inspection.
This man-hour estimate does not include gaining access or sealant cure time or paint drying.
Mechanical skills are necessary.
E. Material - Cost and Availability None.
ORIGINAL ISSUE: APR 14/09 ATP-27-090 PAGE 1 of 10 BAE SYSTEMS (Operations) Limited.
Printed in the U.K.
BRITISH AEROSPACE ATT SERVICE BULLETIN F. Tooling - Price and Availability None.
G. Weight and Balance None.
H. Aircraft Noise Levels Aircraft noise is not affected.
Electrical Load Data Not affected.
Software Accomplishment Summary Not applicable.
K. References
- Aircraft Maintenance Manual chapter 12-10-24 Publications Affected None.
Operators are requested to advise The Publications Control Team, Airline Maintenance and Publication Services, BAE SYSTEMS (Operations) Limited, Prestwick International Airport, KA9 2RW, SCOTLAND, of the accomplishment of this inspection service bulletin and request the necessary revisions for the affected manuals.
Fax: +44(0) 1292 675704 E-Mail: RAPublications@baesystems.com M. Family Tree Of Modification Relationships Not applicable.
ATP-27-090 ORIGINAL ISSUE: APR 14/09 PAGE 2 Printed in the U.K.
BRITISH AEROSPACE ATT SERVICE BULLETIN N. Approval The technical content of this inspection service bulletin is the subject of EASA AIRWORTHINESS DIRECTIVE consultation.
This inspection is to be embodied within twele months of the original issue date of this inspection service bulletin.
The technical content of this inspection service bulletin is approved under the authority of Design Organisation Approval No. EASA.21J.047.
Signed Date 14/4/7 EASA Part 21 Approval No. EASA.21J.047.
ORIGINAL ISSUE: APR 14/09 ATP-27-090 PAGE 3 Printed in the U.K.
BRITISH AEROSPACE ATP SERVICE BULLETIN
BLANK PAGE ATP-27-090 ORIGINAL ISSUE: APR 14/09 PAGE 4 Printed in the U.K.
BRITISH AEROSPACE HIT SERVICE BULLETIN
2. ACCOMPLISHMENT INSTRUCTIONS
SECOND INDEPENDANT INSPECTION
WHENEVER ANY PART OF THE MAIN OR ASSOCIATED SYSTEM IS DISMANTLED,
ADJUSTED, REPAIRED OR RENEWED, THAT PART OF THE SYSTEM WHICH HAS
BEEN DISTURBED SHALL BE SUBJECTED TO A SECOND INDEPENDANT INSPECTION
FOR SECURITY OF LOCKING DEVICES, FULL AND FREE MOVEMENT, DIRECTION AND TENSION CHECKS. THIS WORK MUST BE DONE IN ACCORDANCE WITH THE ACCEPTABLE MEANS OF COMPLIANCE M.A. 402 (a) TO EASA PART M, OR TO AN EQUIVALENT NATIONAL STANDARD.
WHENEVER ANY PART OF THIS SYSTEM IS DISMANTLED, ADJUSTED, REPAIRED OR
RENEWED, DETAILED INVESTIGATION MUST BE MADE ON COMPLETION TO ENSURE
THAT DISTORTION, TOOLS, RAGS OR ANY OTHER LOOSE ARTICLES OR FOREIGN
MATTER SUCH AS COULD IMPEDE THE FREE MOVEMENT AND SAFE OPERATION OF
THE SYSTEM ARE NOT PRESENT AND THAT THE SYSTEMS AND INSTALLATIONS IN THE WORK AREA ARE CLEAN.
WARNING: MAKE SURE THE AIRCRAFT AND THE AIRCRAFT SYSTEMS ARE MADE
SAFE AS DETAILED IN THE APPLICABLE CHAPTERS OF THE AIRCRAFT MAINTENANCE MANUAL.
WARNING: THE MINIMUM CLEARANCE BETWEEN MOVING AND STRUCTURAL PARTS MUST BE 0.2 IN (5.1 MM) UNLESS OTHERWISE STATED.
CAUTION: TO AVOID DAMAGE, MAKE SURE BEFORE MOVING CONTROLS THAT
CONTROL RUNS AND CONTROL SURFACES ARE FREE FROM OBSTRUCTION.
NOTE: Abbreviations used in the accomplishment instructions of this inspection service bulletin are:
AMM - Aircraft Maintenance Manual.
A. Preparation
(1) Refer to AMM Chapter 12-10-24. Remove all aircraft electrical power.
(2) Display a warning notice in the flight compartment 'DO NOT APPLY POWER TO THE AIRCRAFT.
Display a warning notice in the flight compartment 'DO NOT OPERATE FLYING CONTROL SYSTEMS'.
(4) Suitable scaffolding or lifting equipment is required for this inspection.
(5) It is recommended that this inspection is done in a hanger.
ORIGINAL ISSUE: APR 14/09 ATP-27-090 PAGE 5 Printed in the U.K.
BRITISH AEROSPACE ATT SERVICE BULLETIN B. Accomplishment The following one off inspection instructions apply to both the left and right wings and ruader.
(1) Inspect the aileron tab, aileron trim tab and rudder trim tab piano hinges as follows:
(a) Install scaffolding or lifting equipment.
Disengage gust locks. Gain access to aileron tab, aileron trim tab and rudder trim tab piano hinge.
Refer to drawing 1. Check that the piano hinge pin is 0.120 in. (3.00mm) shorter than the piano hinge at each end. Cut to size if required.
(a) Check that the piano hinge ends have been pinched sufficiently to prevent the piano hinge pin migrating from the piano hinge.
(e) Any piano hinge pin that is found in an unsecured condition is to be secured by pinching the piano hinge ends sufficiently to prevent the piano hinge pin migrating from the piano hinge, before next flight.
(fF) Refer to para. 2. Do a second independent inspection.
(g) Remove all material, tools and equipment. Make sure work area is clean.
(h) Do a function test of the aileron. Check for free and easy movement.
(i) Do a function test of the rudder. Check for free and easy movement.
Engage gust locks.
Remove scaffolding or lifting equipment.
(k) Remove the warning notice in the flight compartment 'DO NOT APPLY POWER TO THE AIRCRAFT.
(I) Remove the warning notice in the flight compartment DO NOT OPERATE FLYING CONTROL SYSTEMS'.
C. Recovery
(1) Aircraft records:
(a) Add inspection service bulletin number 'ATP-27-090' to the aircraft records.
Operators are reminded of the necessity to inform The Publications Control Team, Airline Maintenance and Publication Services, BAE SYSTEMS (Operations) Limited, of the accomplishment of this inspection service bulletin in order to obtain the necessary revisions for the affected manuals, see paragraph 1.L. Publications Affected, of this bulletin.
ATP-27-090 ORIGINAL ISSUE: APR 14/09 PAGE 6 Printed in the U.K.
BRITISH AEROSPACE ATT SERVICE BULLETIN 00000 00000 @ 000000000000000
- 0.12in (3.0mm) 0.12in (3.0mm)
PIANO HINGE
HINGE PIN
TYPICAL ATP13232_00 HI HINGE PIN DIMENSIONS.
FIG 1.
ORIGINAL ISSUE: APR 14/09 ATP-27-090 PAGE7 Printed in the U.K.
BRITISH AEROSPACE ATT SERVICE BULLETIN
BLANK PAGE ATP-27-090 ORIGINAL ISSUE: APR 14/09 PAGE 8 Printed in the U.K.
BRITISH LEROSPACE AMP SERVICE BULLETIN
3. MATERIAL INFORMATION None.
A. New parts supplied None.
B. Replacement Parts - Operators Supply None.
C. Instruction Dispositions Notes None.
ORIGINAL ISSUE: APR 14/09 ATP-27-090 PAGE 9 Printed in the U.K.
PRETEN EROSSPACE ATT SERVICE BULLETIN
4. Continued Airworthiness Instructions There are no continued airworthiness instructions applicable to this inspection service bulletin.
A. Scheduled Maintenance
(1) Not applicable.
B. Removal Procedures
(1) Not applicable.
C. Installation Procedures
(1) Not applicable.
D. Installation Procedures
(1) Not applicable.
E. Test Procedures
(1) Not applicable.
F. Troubleshooting
(1) Not applicable.
ATP-27-090 ORIGINAL ISSUE: APR 14/09 PAGE 10 Printed in the U.K.
BRITISH AEROSPACE ATT
SERVICE BULLETIN
BAE SYSTEMS,
PRESTWICK INTERNATIONAL AIRPORT, AYRSHIRE, KA9 2RW, SCOTLAND.
ATP-27-090
TRANSMITTAL SHEET This page transmits the original issue of inspection service bulletin ATP-27-090, pages 1 thru 10.
TITLE: FLIGHT CONTROLS - INSPECTION OF AILERON AND RUDDER TAB PIANO HINGES FOR HINGE PIN SECURITY.
INSPECTION
INSTRUCTIONS FOR INCORPORATION Add pages 1 through 10.
ORIGINAL ISSUE: APR 14/09 ATP-27-090 PAGE 1 OF 1 BAE SYSTEMS (Operations) Limited.
Printed in the U.K.
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