AD 83-11-01 R1

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AD Number:
83-11-01 R1
Document Type:
AD Final Rules
Docket Number:
83-ASW-23
Subject Heading:
Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS350B, \nAS350C...Show more
Subject:
Emergency Flotation System
Status:
Current
Citation:
Federal Register Volume 49, Number 238 (Monday, December 10, 1984)
Citation Publish Date:
12/10/1984
Effective Date:
12/20/1984
Make:
Airbus Helicopters
Model:
AS350B | AS350C | AS350D | AS350D1
Product Type:
Aircraft
Product Subtype:
Rotorcraft
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
AIR-700: Compliance & Airworthiness Division
Office of Primary Responsibility:
AIR-730: International Validation Branch
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 83-11-01 R1
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-4959

AD NUMBER:   83-11-01 R1

SUBJECT HEADING:   Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS350B,
AS350C, AS350D, and AS350D-1 Helicopters

ACTION:  

SUMMARY:  

DATES:   Effective December 20, 1984.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
83-11-01 R1 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS): Amendment 39-4657 as amended by Amendment 39-4959. Applies to all SNIAS Model AS350B, AS350C, AS350D, and AS350D-1 helicopters, certificated in all categories, that have Air Cruiser flotation kits installed in accordance with STC SH4032SW or SH2825SW, and delivered by AHC prior to April 4, 1983.

Compliance is required as indicated unless already accomplished in accordance with Aerospatiale Helicopter Corporation Service Bulletin No. SB 350-18, dated April 4, 1983.

To prevent possible failure of the Air Cruiser emergency flotation system, accomplish the following prior to further overwater flight.

(a) Reroute harness and add 1/4 inch diameter heat shrink tubing to electrical harness in accordance with Figure 1.

(b) Add 3/4 inch diameter heat shrink tubing to encase both mechanical cable and electrical harness. Assure that 3/4 inch tube overlaps 1/4 inch shrink tubing as shown in Figure 1.

(c) Install four supporting clamps, P/N MS21919WDG2, on each float bottle valve assembly side plate (drill and fit per Figure 1).

(d) Install three clamps, P/N MS21919WDG36, on each cross tube to support squib harness (reference Figure 2). Ground strap is to be clamped at the lowest point on cross tube that will allow float to be pivoted between operating and ground handling position.

(e) Inspect the harness installation and perform the electrical test described in Air Cruiser's Overhaul Manual, reference 25.60.93, page 706, or FAA approved equivalent.

(f) Materials necessary to complete the modification are listed below.


DESCRIPTION	PART NUMBER	SOURCE	QUANTITY
Rivet	MS20470AD3-4	Std. hdw	4
Bracket	AN743-13	Std. hdw	2
Clamp	MS21919WDG2	Std. hdw	8
Clamp	MS21919WDG36	Std. hdw	6
Screw	NAS603-9P	Std. hdw	4
Washer	AN960-10L	Std. hdw	4
Nut	MS21044N3	Std. hdw	4
Heat Shrink Tubing	3/4 Inch	Raychem	10 ft.
		(Mouser Alt)	
Heat Shrink Tubing	1/4 Inch	Raychem	3 ft.
		(Mouser Alt)	

Amendment 39-4657 became effective June 13, 1983.
This Amendment 39-4959 becomes effective December 20, 1984.



FIGURE 1, PART 1
AD 83-11-01




Heat Shrink Tubing to Extend Inboard Past
Clamp on Cross Tube. (High & Low Skid Gear)


NOTE:
Ground strap to be clamped at lowest point on
Cross tube that will allow float to be pivoted
between operating and ground handling position.
Do not clamp or otherwise secure ground strap to
mech. control & elect wire bundle except where
both can be clamped together on cross tube.

FIGURE 2
AD 83-11-01



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