On this page
ADs that cite it · 2
Newest first, with the revision each names, as OpenAirDocs read it from the AD’s text: check it against the AD.
Also cited in 2 proposed ADs.
Text · 22
From the PDF’s text layer: layout, tables and figures are lost. The PDF is the document. © UTC Aerospace Systems. Filed by the FAA in regulations.gov docket FAA-2022-0143; AD 2022-11-11 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
Query with SQL
duckdb -csv -c "SELECT p.page, p.text_source, p.text, f.rights_holder, f.license FROM 'https://openairdocs.org/data/latest/service_document_file_page.parquet' p JOIN 'https://openairdocs.org/data/latest/service_document_file.parquet' f USING (file_sha256) WHERE p.file_sha256 = 'd4ee7ff35c9be896fda27acef639583a1ff0c9beee0cae107c5ac356b781cced' ORDER BY p.page"
Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT p.page, p.text_source, p.text, f.rights_holder, f.license FROM 'https://openairdocs.org/data/latest/service_document_file_page.parquet' p JOIN 'https://openairdocs.org/data/latest/service_document_file.parquet' f USING (file_sha256) WHERE p.file_sha256 = 'd4ee7ff35c9be896fda27acef639583a1ff0c9beee0cae107c5ac356b781cced' ORDER BY p.page
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Tx Ltr SB 84- - - 32- - - 161 P a g e1o f2 Revision ‘B’ 31 Mar 2021 NB DHC - - -8 (DASH 8) SERVICE BULLETIN 84 - - -32 - - -161 Landing Gear - - - NLG Pivot Pin Retention Bolt - - - Introduction of NAS6204 - - -14D Bolt Replacing 47205 - - -3 Bolt to Create Assembly 47100 - - -25/47200 - - -33 - - - ModSum 4 - - -114020 This page transmits Revision ‘B’ of Service Bulletin 84- - - 32- - - 161, pages 1 thru 18, dated 31 Mar 2021.
This service bulletin is re- - -issued in its entirety for the reasons that follow:
--- T h eReferences section is revised to convey the latest revision of the service bulletin and engineering documentation --- T h eMaterial, Price and Availability, Parts Required Per Aircraft, Existing Parts Accountability and Accomplishment Instructions sections are revised to show the latest issue of the UTC Aerospace Systems Service Bulletin --- T h eExisting Parts Accountability section is also revised to add the information for bolt P/N MS14145L4 --- T h eProcedures section is revised to add the instruction to use new bolt P/N MS14145L4 and new cotter pin P/N MS24665- - - 153.
The Compliance in the previous issue(s) of this service bulletin is not affected by this revision. No additional rework to the aircraft is introduced by this revision.
Remove the previous issue of Service Bulletin 84- - - 32- - - 161 and attached VSB and replace with attached.
Previous issue(s) of Service Bulletin 84- - - 32- - - 161:
Initial issue - - - Pages 1 thru 16 dated - - - 07 Apr 2020 Revision ‘A’ - - - Pages 1 thru 16 dated - - - 27 Jan 2021 DHC Merged Document SB84-32-161 Rev B_31 Mar 2021 & UTC Aerospace VSB 47100-32-145 R3_Mar 26/21 1 of 20
SERVICE BULLETIN 84- - -32- - -161 Tx Ltr SB 84- - - 32- - - 161 P a g e2o f2 Revision ‘B’ 31 Mar 2021 NB This Page Intentionally Blank 1 DHC Merged Document SB84-32-161 Rev B_31 Mar 2021 & UTC Aerospace VSB 47100-32-145 R3_Mar 26/21 2 of 20
S.B. 84- - - 32- - - 161 P a g e1o f807 Apr 2020 NBRevision ‘B’ 31 Mar 2021
SERVICE BULLETIN ATA SYSTEM: 3221 NUMBER: 84- - -32- - -161
DE HAVILLAND AIRCRAFT OF CANADA LIMITED (DHC) CONSIDERS
THIS SERVICE BULLETIN TO BE PARTICULARL Y SIGNIFICANT AND
URGES OPERATORS TO PROMPTLY EVALUATE THE CONTENTS SUBJECT : Landing Gear - - - NLG Pivot Pin Retention Bolt - - - Introduction of NAS6204 - - -14D Bolt Replacing 47205 - - -3 Bolt to Create Assembly 47100 - - -25/47200 - - -33 - - - ModSum 4 - - -114020
PLANNING INFORMATION NOTE: This service bulletin supercedes service bulletin 84- - - 32- - - 145.
A. Effectivity Aircraft Affected:
In- - -Service: DHC - - - 8 Aircraft Models 401 and 402 Serial Numbers 4001, 4003 thru 4622.
Related ModSum Title 4N114020 NLG Pivot Pin Retention Bolt - - - Introduction of NAS6204- - - 14D Bolt - - - Replacing 47205- - - 3 Bolt to create Assembly 47100- - - 25/47200- - - 33 4N168127 Landing Gear - - - NLG Pivot Pin Retention Bolt - - - Introduction of 47205- - -3 Configuration and NLG Inner Cylinder Corrosion Improvement Configuration Change DHC Merged Document SB84-32-161 Rev B_31 Mar 2021 & UTC Aerospace VSB 47100-32-145 R3_Mar 26/21 3 of 20
SERVICE BULLETIN 84- - -32- - -161 S.B. 84- - - 32- - - 161 P a g e2o f807 Apr 2020 NBRevision ‘B’ 31 Mar 2021 Related ModSum Title 4Q114018 Landing Gear - - - Nose Wheel Steering - - - Hydraulic Motor Loss of Configuration Control - - - Motor Jam Due to Wear Production: ModSum 4- - - 114020 will be installed before delivery on applicable DHC- - -8 Aircraft at Serial Number 4623 and subsequent.
NOTE: The instructions in this service bulletin are only applicable to the systems and parts installed at the time of delivery on the aircraft or as changed by DHC Service Bulletin(s). Before you do this bulletin, examine all STC or equivalent action changes to make sure this bulletin can be completed.
Spares Affected:
The following is a list of spares affected by this change. Review spares and procurement systems to determine the existence of any listed parts. See Paragraph 2.D., Existing Parts Accountability , for disposition.
Part Number Description 47205- - - 1 or Special Bolt 47205- - - 3 Special Bolt 47100- - - XX NLG Shock Strut Assemblies (See NOTE 2) NOTE 1: If none of the above bolts are installed contact DHC for further direction.
NOTE 2: NLG Shock Strut Assemblies that have 47205- - - 1 or 47205- - - 3 bolt installed (SB SB 84- - - 32- - - 110/ ModSum 4- - - 113749 or SB 84- - - 32- - - 145/ ModSum 4- - - 168127 incorporated) DHC Merged Document SB84-32-161 Rev B_31 Mar 2021 & UTC Aerospace VSB 47100-32-145 R3_Mar 26/21 4 of 20
SERVICE BULLETIN 84- - -32- - -161 S.B. 84- - - 32- - - 161 P a g e3o f807 Apr 2020 NBRevision ‘B’ 31 Mar 2021 B. Reason Problem: Several operators have reported instances of corrosion or cracks in the pivot pin retention bolt in the NLG shock strut assembly.
Solution: This service bulletin provides the instructions to remove and replace pin retention bolt P/N 47205- - - 1 or P/N 47205- - - 3 used in the NLG shock strut assemblies having SB 84- - - 32- - - 110 (ModSum 4- - - 113749) or SB 84- - - 32- - - 145 (ModSum 4- - - 168127) incorporated, with a new bolt P/N NAS6204- - - 14D. This NAS bolt must be replaced before its life limit per PSM 1- - -84- - -7, Part 2 is reached. Also a new maintenance task to lubricate the NLG pivot pin for future maintenance.
This service bulletin also provides instructions to correctly re- - -identify shock strut assemblies P/N 47100 and P/N 47200 with embodiment of SB 84- - - 32- - - 110 or SB 84- - - 32- - - 145 which could have resulted in the incorrect identification of 47100 and 47200 assemblies.
C. Description The procedures in this service bulletin give the instructions to do the tasks that follow:
- - - Aircraft electrical power is removed
- - - The nose landing gear lock is engaged
- - - The main landing gear lock pins are installed thru each main gear and main gear door mechanism
- - - Access is gained to the nose landing gear
- - - The NLG pivot pin retention bolt is replaced with new bolt and associated hardware
- - - NLG Shock Strut assemblies 47100 and 47200 are re- - - identified
- - - Close out.
D. Compliance De Havilland Aircraft of Canada Limited highly recommends that ModSum 4- - - 114020 be incorporated at the earliest opportunity unless otherwise directed by the operator’s airworthiness authority.
Transport Canada Airworthiness Directive Pending.
DHC Merged Document SB84-32-161 Rev B_31 Mar 2021 & UTC Aerospace VSB 47100-32-145 R3_Mar 26/21 5 of 20
SERVICE BULLETIN 84- - -32- - -161 S.B. 84- - - 32- - - 161 P a g e4o f807 Apr 2020 NBRevision ‘B’ 31 Mar 2021 E. Approval The technical content of this service bulletin has been approved under the authority of the Transport Canada Civil Aviation (TCCA) Design Approval Organization No: DAO #19- - - Q - - - 01.
This service bulletin affects Airworthiness Limitations (AWLs) or Damage T olerance Inspections (DTIs). Refer to MRM TASK 32- - -21- - -01- - -702, or later incorporation of those tasks.
F . Manpower It will take an estimated 3.50 man- - -hours to complete this service bulletin. The breakdown of the man- - -hours is shown in the table that follows:
TASK M A N --- H O U R S J o b S e t --- U p 1.00 Procedure in Part B 2.00 T e s t/R T S 0.00 Close- - -Out 0.50 This estimate is for direct labour done by an experienced crew and it does not include, planning, familiarization, cure time, part fabrication, tool acquisition or lost time.
G. Material - - - Price and Availability Refer to the enclosed UTC Aerospace Systems Service Bulletin 47100- - - 32- - - 145 R3.
H. T ooling - - - Price and Availability None I. Weight and Balance Not affected J. Electrical Load Data Not affected DHC Merged Document SB84-32-161 Rev B_31 Mar 2021 & UTC Aerospace VSB 47100-32-145 R3_Mar 26/21 6 of 20
SERVICE BULLETIN 84- - -32- - -161 S.B. 84- - - 32- - - 161 P a g e5o f807 Apr 2020 NBRevision ‘B’ 31 Mar 2021 K. Publications Affected Aircraft Illustrated Parts Catalog P S M 1 --- 8 4 --- 4......................
ModSums Manual P S M 1 --- 8 4 --- 1 2..................................
Maintenance Requirement Manual P S M 1 --- 8 4 --- 7....................
L. References Revision ‘B’ of this service bulletin was prepared to the engineering drawings and related data that follows:
DRAWING SHEET REV 83220400 1 AR 83220400 1.1 --- ModSum 4Q114020 Rev. ‘D’ ModSum 4N114020 Rev. ‘C’ ModSum 4- - - 114020 Rev. ‘E’ ModSum 4- - - 168127 ModSum 4- - - 113749 M R M T A S K 3 2 --- 2 1 --- 0 1 --- 7 0 2 DHC Service Bulletin 84- - - 32- - - 110 DHC Service Bulletin 84- - - 32- - - 145 PCA 47447 Revision 0 (for internal reference only) Transport Canada Airworthiness Directive Pending UTC Aerospace Systems Service Bulletin 47100- - - 32- - - 145 R3.
2. MATERIAL INFORMA TION A. Parts Required Per Aircraft Refer to the enclosed UTC Aerospace Systems Service Bulletin 47100- - - 32- - - 145 R3.
DHC Merged Document SB84-32-161 Rev B_31 Mar 2021 & UTC Aerospace VSB 47100-32-145 R3_Mar 26/21 7 of 20
SERVICE BULLETIN 84- - -32- - -161 S.B. 84- - - 32- - - 161 P a g e6o f807 Apr 2020 NBRevision ‘B’ 31 Mar 2021 B. Parts Required to Modify Spares None C. Special T ools and Equipment Required None D. Existing Parts Accountability The following parts may be affected by this service bulletin. Indented parts are components of the next higher assembly. The quantity (Qty.) column lists the quantity that may be affected per aircraft for non- - -indented parts and the quantity per next higher assembly for indented parts.
Existing Part Number Description Qty. IC DC New Part Number PNC 47200- - - 31 Dressed Shock Strut Assembly 1 A RWI 47200- - - 33 S 47100- - - 23 Shock Strut Assembly 1 A RWI 47100- - - 25 S 47205- - - 3 or 47205- - - 1 Pivot Pin Retention Bolt 1 A DIS NAS6204- - - 14D S NAS1149C0463R Washer 1 A DIS NAS1149C0432R (See Note below) S MS14145L4 Nut 1 A DIS MS14145L4 S NOTE: New Part Number NAS1149C0432R quantity is 2 (1 under the bolt head and 1 under the nut).
IC Interchangeability Code A Not interchangeable.
B Removed Part. No direct replacement.
C Conditionally Interchangeable. Installation of superseded part negates the intent of this service bulletin.
DHC Merged Document SB84-32-161 Rev B_31 Mar 2021 & UTC Aerospace VSB 47100-32-145 R3_Mar 26/21 8 of 20
SERVICE BULLETIN 84- - -32- - -161 S.B. 84- - - 32- - - 161 P a g e7o f807 Apr 2020 NBRevision ‘B’ 31 Mar 2021 DC Disposition DIS Discard Part.
MUI Multiple Usage Item: Return to stock if serviceable.
RWK Rework existing part in accordance with this service bulletin.
RWI Rework existing part per UTC Aerospace Systems Service Bulletin 47100- - - 32- - - 145 R3.
SAL Salvage. Return to operator’s stores for salvage consideration.
PNC Part Number Code N No equivalent DHC part number for reworked part. Indicate on part that this service bulletin has been accomplished.
R Part number after rework.
S Superseding or equivalent part number.
X Reworked part and superseding part are functionally and physically equivalent but not identical.
3. ACCOMPLISHMENT INSTRUCTIONS If it is not possible to complete all the instructions of this service bulletin because of the configuration of the aircraft, speak with a representative of DHC in the CRC at 1 (844) 272- - - 2720 (1 (844) CRC - - - CRC0) or email at thd@dehavilland.comfor analysis and to get an approved disposition to complete this service bulletin.
A . J o b S e t --- U p WARNING: MAKE SURE YOU INSTALL THE LOCKPINS ON THE MAIN LANDING GEAR. MAKE SURE YOU ENGAGE THE NOSE GEAR LOCK. IF YOU
DO NOT DO THIS, THE LANDING GEAR CAN ACCIDENTALL Y RETRACT . THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO THE EQUIPMENT .
WARNING: MAKE SURE YOU INSTALL THE LOCKPINS IN THE DOOR MECHANISMS OF THE MLG AND NLG. THE DOOR MECHANISMS CAN ACCIDENTALL Y CLOSE THE LANDING GEAR DOORS. THIS
CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO THE EQUIPMENT .
DHC Merged Document SB84-32-161 Rev B_31 Mar 2021 & UTC Aerospace VSB 47100-32-145 R3_Mar 26/21 9 of 20
SERVICE BULLETIN 84- - -32- - -161 S.B. 84- - - 32- - - 161 P a g e8o f807 Apr 2020 NBRevision ‘B’ 31 Mar 2021
(1) Placard and select all aircraft electrical power to OFF . Obey all relevant WARNINGS and CAUTIONS (refer to AMM TASK 24- - - 00- - - 00- - - 861- - - 802 and TASK 24- - - 00- - - 00- - - 910- - - 801).
(2) Make sure that lock pins are installed through each main gear and main gear door mechanism.
(3) Make sure the nose gear ground lock is engaged.
(4) Set wheel chocks in front and behind the landing gear tires.
B. Procedure
(1) If necessary, lift the aircraft on the jacks in order to gain access to the pivot pin retention bolt (refer to AMM TASK 07- - - 10- - - 00- - - 582- - - 802 and TASK 07- - - 10- - - 00- - - 582- - - 805).
(2) Refer to UTC Aerospace Systems Service Bulletin 47100- - - 32- - - 145 R3 to replace the existing bolt P/N 47205- - - 1 or P/N 47205- - - 3 and the washer P/N NAS1149C0463R with the new bolt P/N NAS6204- - - 14D and the washer P/N NAS1149C0432R respectively. Use new nut P/N MS14145L4 and new cotter pin P/N MS24665- - - 153.
NOTE: New Part Number NAS1149C0432R quantity is 2 (1 under the bolt head and 1 under the nut).
(a) Lubricate the trailing arm (refer to AMM TASK 12- - - 20- - - 01- - - 640- - - 833).
(3) Re- - - identify the NLG shock strut assembly P/N 47100 and the dressed shock strut assembly P/N 47200 (refer to UTC Aerospace Systems Service Bulletin 47100- - - 32- - - 145 R3 for re- - - identification and AMM TASK 20- - - 00- - - 01- - - 910- - - 801).
(4) If the aircraft was lifted, lower the aircraft and remove the jack (refer to AMM TASK 07- - - 10- - - 00- - - 582- - - 802).
C. Close Out
(1) Remove all tools and equipment from the work area.
(2) On completion of this service bulletin, make the following entry in the appropriate logbooks: “Service Bulletin 84 - - - 32 - - - 161 {i.e. Landing Gear - - - NLG Pivot Pin Retention Bolt - - - Introduction of NAS6204- - -14D Bolt Replacing 47205- - -3 Bolt} accomplished.”
1 DHC Merged Document SB84-32-161 Rev B_31 Mar 2021 & UTC Aerospace VSB 47100-32-145 R3_Mar 26/21 10 of 20
Page 1/2 Mar 26/21 47100-32-145 R3 Landing Systems - Landing Gear Goodrich Aerospace Canada Ltd 1400 South Service Road West Oakville, Ontario L6L 5Y7 Canada Tel: +1 905 825 1515 Fax: +1 905 825 1583 www.customers.collinsaerospace.com CAGE: 02121
SERVICE BULLETIN
EXPORT CLASSIFICATION U.S. Export Classification: EAR ECCN - 9E991 EIPA Export Clas sification: UNCTD
PROPRIETARY INFORMATION THIS DOCUMENT IS THE PROPERTY OF U T C A E R O S P A C E S Y S T E M S . Y O U M A Y NOT POSSESS, USE, COPY OR DISCLOSE THIS DOCUMENT OR ANY
INFORMATION IN IT, FOR ANY PURPOSE, INCLUDING WITHOUT LIMITATIO N, TO DESIGN, MANUFACTURE OR REPAIR PARTS, OR OBTAIN ANY GOVERNMENT APPROVAL TO DO SO, WITHOUT UTC AEROSPACE SYSTEM'S EX PRESS WRITTEN PERMISSION. NEITHE R RECEIPT NOR POSSESSION OF THIS DOCUMENT ALONE, FROM ANY SOURCE, CONSTITUTES SUCH PERMISSI ON. POSSESSION, USE, COPYING OR DISCLOSURE BY ANYONE WITHOUT UTC AEROSPACE SYSTEM'S EXPRESS WR ITTEN PERMISSION IS NOT AUTHORIZED AND MAY RESULT IN CRIMINAL AND/OR CIVIL LIABILITY.
NLG SHOCK STRUT - PIVOT PIN RETENTION – INTRODUCTION OF A NEW PIVOT PIN
RETENTION BOLT REVISION NO. 3 – Mar 26/21
HIGHLIGHTS Service Bulletin 47100-32-145 R3 supersedes Service Bulletin 47100-32-145 R2 dated Jan 4/21 and is re-issued in its entirety to reflect the changes listed below.
The compliance in the previous issue of this Service Bulletin is not affected by this revision.
No additional rework is introduced by this revision.
Please replace your current copy of 47100-32-145 R2 with 47100-32-145 R3 Page/Para Description of Change Page 2, Paragraph 2.B. Disposition of the nut revised to now discard nut each time Page 5, Paragraph 4.B.(4) &
(5) Step revised to remove reference to the manifold assy DHC Merged Document SB84-32-161 Rev B_31 Mar 2021 & UTC Aerospace VSB 47100-32-145 R3_Mar 26/21 11 of 20
PAGE INTENTIONALLY LEFT BLANK DHC Merged Document SB84-32-161 Rev B_31 Mar 2021 & UTC Aerospace VSB 47100-32-145 R3_Mar 26/21 12 of 20