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427 Alert Service Bulletins

file name modified size description

ASB_427-09-27.pdf 28-Apr-10 0K BHT 427 MM, Chapter 4, Correction of

ASB_427-10-33.pdf 27-Apr-10 0K ENGINE, TRANSMISSION AND HYDRAULIC OIL SYSTEM MODIFICATION OF

ASB_427-10-32.pdf 23-Mar-10 0K TAIL ROTOR BLADES P/N 427-016-001-109 AND 427-016-001-109L, INSPECTION OF.

ASB_427-10-31.pdf 02-Mar-10 0K TAILBOOM ATTACHMENT HARDWARE, REPLACEMENT OF.

ASB_427-10-30.pdf 17-Feb-10 0K CARGO HOOK EQUIPMENT KIT P/N 427-706-900-101 AND -109 IMPROVEMENT OF.

ASB_427-06-15_Rev_A.pdf 20-Jan-10 0K Revision A to Alert Service Bulletin 427-06-15: Vertical Fin to Tail Rotor Gearbox Support Attachment Hardware Replacement of.

ASB_427-09-29_Rev_A.pdf 24-Nov-09 0K Revision A to Alert Service Bulletin 427-09-29: Tail Rotor Driveshaft Hanger Bearing Bracket P/N 427-044-223-101, Rework of.

ASB_427-09-29.pdf 28-Oct-09 0K Tail rotor driveshaft hanger bearing bracket p/n 427-044-233-101, Rework of

ASB_427-09-28.pdf 28-Oct-09 0K Hydraulic Servoactuator p/n 206-076-062-111, Inspection of

427-MM_Rev_11_18-Aug-2009.pdf 08-Sep-09 0K 427MM, Rev 11, Aug 18, 2008

ASB_427-09-26_Rev A.pdf 01-Jun-09 0K Tail Rotor Gearbox P/N 427-042-400-All and Tail Rotor Gearbox Case Assembly P/N 406-040-406-All, One Time Inspection

ASB_427-09-25.pdf 08-Apr-09 76K STAKED BEARINGS, ONE-TIME INSPECTION

ASB_427-09-24_Rev._A.pdf 31-Mar-09 84K ANTI-DRIVE LINK ASSEMBLY P/N 406-010-432-101, ONE TIME INSPECTION OF

ASB_427-09-23.pdf 11-Mar-09 36K LEVER ASSEMBLY P/N 407-001-320-105 AND 407-001-320-109, ONE TIME INSPECTION OF

ASB_427-08-22.pdf 27-Jun-08 155K Hydraulic Pump Driveshaft Assembly P/N 406-040-072-105, One Time Inspection Of

ASB_427-08-21.pdf 10-Apr-08 401K P3 Fitting - Inspection Of

ASB_Index_2008-427.pdf 04-Mar-08 234K ASB Index 2008-427

ASB_427-08-20.pdf 03-Mar-08 123K Collective Control Idler Link Assembly P/N 427-001-532-101 Inspection and Modification of

ASB_427-07-19.pdf 05-Oct-07 451K Transmission Case Set P/N 427-040-200-111 Surface Finish, Improvement of

ASB_427-07-18_Rev_A.pdf 19-Sep-07 159K Tail Rotor Blade Assembly, Inspection of

ASB_427-07-17.pdf 10-Apr-07 62K Disc Assembly 407-340-340-103, Inspection of

ASB_427-07-16.pdf 27-Mar-07 328K Cargo Hook Stress Corrosion Cracks

ASB_427-06-14.pdf 10-Nov-06 357K Bus Bar, Replacement of

ASB_427-05-13.pdf 02-Jun-06 1,082K Turboshaft Engine Compressor Disc Inspection of and Retaining Nut Replacement

ASB_427-01-04_Rev_A.pdf 03-Apr-06 74K Engine-to-Transmission Driveshaft Assembly 206-340-300-105, Inspection of

ASB_427-05-12_Rev_A.pdf 21-Nov-05 234K Clevis Assembly - Hydraulic Servo Assembly, Part Number 41011300 and 41011700

ASB 427-04-11.pdf 16-Jan-04 1,185K PRATT & WHITNEY CANADA PW207D TURBOSHAFT ENGINES AUTOMATIC LOW CYCLE FATIGUE CALCULATION VERIFICATION OF

ASB 427-03-10.pdf 19-Dec-03 1,566K AIR SPEED LIMITATION DECAL P/N 427-020-671-121, -123, -125, -127 AND -129 INTRODUCTION OF

ASB 427-03-09 .pdf 23-Jan-03 242K TAIL ROTOR GEARBOX CASE P/N 406-040-406-109 OIL FEED PASSAGE, PRESENCE OF AND ADDITION OF.

ASB 427-02-08.pdf 30-Aug-02 1,298K CYCLIC CENTERING SWITCH, RELOCATION OF

ASB 427-01-07.pdf 26-Nov-01 1,842K AUXILIARY FIN P/N 427-035-836-101/-102/-105 AND -106, HEIGHT REDUCTION OF

ASB 427-01-05.pdf 12-Nov-01 1,767K FAA TYPE CERTIFICATION KIT P/N 427-706-019-101/-103 DEACTIVATION AND ADDITION OF DRAINAGE HOLES FOR COMMON CONFIGURATION

ASB 427-01-06 .pdf 09-Nov-01 792K IN-LINE ELECTRICAL TERMINAL JUNCTIONS, REPLACEMENT OF

ASB 427-01-04.pdf 12-Oct-01 372K ENGINE-TO-TRANSMISSION DRIVESHAFT 206-340-300-105, INSPECTION OF

ASB 427-01-03.pdf 09-Oct-01 358K AIR SPEED LIMITATION DECAL, REPLACEMENT OF P/N 427-020-671-109 AND 427-020-671-111 DECAL(S)

ASB 427-01-02.pdf 11-Sep-01 606K HYDRAULIC SOLENOID "TEE FITTING" P/N AS1003W060404, TUBES P/N's 427-080-058-101 AND 427-080-003-101 REPLACEMENT OF.

ASB 427-01-01.pdf 20-Apr-01 571K AUXILIARY FIN UPPER TUNING WEIGHT 407-023-003-145, RELOCATION OF

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427 Alert Service Bulletins
file name	modified	size	description
ASB_427-09-27.pdf	28-Apr-10	0K	BHT 427 MM, Chapter 4, Correction of
ASB_427-10-33.pdf	27-Apr-10	0K	ENGINE, TRANSMISSION AND HYDRAULIC OIL SYSTEM MODIFICATION OF
ASB_427-10-32.pdf	23-Mar-10	0K	TAIL ROTOR BLADES P/N 427-016-001-109 AND 427-016-001-109L, INSPECTION OF.
ASB_427-10-31.pdf	02-Mar-10	0K	TAILBOOM ATTACHMENT HARDWARE, REPLACEMENT OF.
ASB_427-10-30.pdf	17-Feb-10	0K	CARGO HOOK EQUIPMENT KIT P/N 427-706-900-101 AND -109 IMPROVEMENT OF.
ASB_427-06-15_Rev_A.pdf	20-Jan-10	0K	Revision A to Alert Service Bulletin 427-06-15: Vertical Fin to Tail Rotor Gearbox Support Attachment Hardware Replacement of.
ASB_427-09-29_Rev_A.pdf	24-Nov-09	0K	Revision A to Alert Service Bulletin 427-09-29: Tail Rotor Driveshaft Hanger Bearing Bracket P/N 427-044-223-101, Rework of.
ASB_427-09-29.pdf	28-Oct-09	0K	Tail rotor driveshaft hanger bearing bracket p/n 427-044-233-101, Rework of
ASB_427-09-28.pdf	28-Oct-09	0K	Hydraulic Servoactuator p/n 206-076-062-111, Inspection of
427-MM_Rev_11_18-Aug-2009.pdf	08-Sep-09	0K	427MM, Rev 11, Aug 18, 2008
ASB_427-09-26_Rev A.pdf	01-Jun-09	0K	Tail Rotor Gearbox P/N 427-042-400-All and Tail Rotor Gearbox Case Assembly P/N 406-040-406-All, One Time Inspection
ASB_427-09-25.pdf	08-Apr-09	76K	STAKED BEARINGS, ONE-TIME INSPECTION
ASB_427-09-24_Rev._A.pdf	31-Mar-09	84K	ANTI-DRIVE LINK ASSEMBLY P/N 406-010-432-101, ONE TIME INSPECTION OF
ASB_427-09-23.pdf	11-Mar-09	36K	LEVER ASSEMBLY P/N 407-001-320-105 AND 407-001-320-109, ONE TIME INSPECTION OF
ASB_427-08-22.pdf	27-Jun-08	155K	Hydraulic Pump Driveshaft Assembly P/N 406-040-072-105, One Time Inspection Of
ASB_427-08-21.pdf	10-Apr-08	401K	P3 Fitting - Inspection Of
ASB_Index_2008-427.pdf	04-Mar-08	234K	ASB Index 2008-427
ASB_427-08-20.pdf	03-Mar-08	123K	Collective Control Idler Link Assembly P/N 427-001-532-101 Inspection and Modification of
ASB_427-07-19.pdf	05-Oct-07	451K	Transmission Case Set P/N 427-040-200-111 Surface Finish, Improvement of
ASB_427-07-18_Rev_A.pdf	19-Sep-07	159K	Tail Rotor Blade Assembly, Inspection of
ASB_427-07-17.pdf	10-Apr-07	62K	Disc Assembly 407-340-340-103, Inspection of
ASB_427-07-16.pdf	27-Mar-07	328K	Cargo Hook Stress Corrosion Cracks
ASB_427-06-14.pdf	10-Nov-06	357K	Bus Bar, Replacement of
ASB_427-05-13.pdf	02-Jun-06	1,082K	Turboshaft Engine Compressor Disc Inspection of and Retaining Nut Replacement
ASB_427-01-04_Rev_A.pdf	03-Apr-06	74K	Engine-to-Transmission Driveshaft Assembly 206-340-300-105, Inspection of
ASB_427-05-12_Rev_A.pdf	21-Nov-05	234K	Clevis Assembly - Hydraulic Servo Assembly, Part Number 41011300 and 41011700
ASB 427-04-11.pdf	16-Jan-04	1,185K	PRATT & WHITNEY CANADA PW207D TURBOSHAFT ENGINES AUTOMATIC LOW CYCLE FATIGUE CALCULATION VERIFICATION OF
ASB 427-03-10.pdf	19-Dec-03	1,566K	AIR SPEED LIMITATION DECAL P/N 427-020-671-121, -123, -125, -127 AND -129 INTRODUCTION OF
ASB 427-03-09 .pdf	23-Jan-03	242K	TAIL ROTOR GEARBOX CASE P/N 406-040-406-109 OIL FEED PASSAGE, PRESENCE OF AND ADDITION OF.
ASB 427-02-08.pdf	30-Aug-02	1,298K	CYCLIC CENTERING SWITCH, RELOCATION OF
ASB 427-01-07.pdf	26-Nov-01	1,842K	AUXILIARY FIN P/N 427-035-836-101/-102/-105 AND -106, HEIGHT REDUCTION OF
ASB 427-01-05.pdf	12-Nov-01	1,767K	FAA TYPE CERTIFICATION KIT P/N 427-706-019-101/-103 DEACTIVATION AND ADDITION OF DRAINAGE HOLES FOR COMMON CONFIGURATION
ASB 427-01-06 .pdf	09-Nov-01	792K	IN-LINE ELECTRICAL TERMINAL JUNCTIONS, REPLACEMENT OF
ASB 427-01-04.pdf	12-Oct-01	372K	ENGINE-TO-TRANSMISSION DRIVESHAFT 206-340-300-105, INSPECTION OF
ASB 427-01-03.pdf	09-Oct-01	358K	AIR SPEED LIMITATION DECAL, REPLACEMENT OF P/N 427-020-671-109 AND 427-020-671-111 DECAL(S)
ASB 427-01-02.pdf	11-Sep-01	606K	HYDRAULIC SOLENOID "TEE FITTING" P/N AS1003W060404, TUBES P/N's 427-080-058-101 AND 427-080-003-101 REPLACEMENT OF.
ASB 427-01-01.pdf	20-Apr-01	571K	AUXILIARY FIN UPPER TUNING WEIGHT 407-023-003-145, RELOCATION OF