AD 75-12-08

AD Final Rules - DRS_75-12-08.html
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AD Number:
75-12-08
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Michael D. Adams and The Balloon Works Hot Air Balloons Model Rego 7553S S...Show more
Subject:
Throttle or Trigger Valves
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
04/30/1976
Make:
McGrath, Michael D. | Sundance Balloons (US) | JR Aerosports, LTD
Model:
A-60S | A-B | A50S | A55 | A55S | LD-S | Galaxy-7 | Galaxy-8 | Galaxy-9 | Galaxy 10 | Galaxy 11 | Ga...Show more
Product Type:
Aircraft
Product Subtype:
Balloon
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 75-12-08
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2587

AD NUMBER:   75-12-08

SUBJECT HEADING:   Airworthiness Directives; Michael D. Adams and The Balloon Works Hot Air Balloons Model Rego 7553S Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective April 30, 1976.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
75-12-08 MICHAEL D. ADAMS and The Balloon Works Hot Air Balloons: Amendment 39-2228 as amended by Amendment 39-2587.

Applies to Rego 7553S series throttle or trigger valves installed on all models of Michael D. Adams and The Balloon Works Hot Air Balloons certificated in all categories.

Compliance required as indicated below after the effective date of this AD unless already accomplished.

To prevent failures of the "O" ring on the valve stem; valve seat washer loosening or valve actuating handle rollpin becoming dislodged, accomplish the following or an equivalent modification approved by the Chief, Engineering and Manufacturing Branch, FAA, Southern Region.

Within the next 25 hours time in service, accomplish: Paragraph a, b, c and d. Paragraph "a" is to be accomplished thereafter at each 100 hours time in service or at each annual inspection, whichever comes first.

a. Remove the valve actuating lever rollpin P/N 7553S-8 from actuating lever. (Be careful to remove any burrs in the stem area around the rollpin hole before removing the valve stem P/N 7553S-1 from the bonnet P/N 7553-5.) Replace the "O" ring stem seal with a new Rego "O" ring P/N 1421-7. Lubricate the new "O" ring with a suitable lubricant before reassembly.

b. Check the torque of the valve seat retaining screw to 10 to 12 in-lbs in the loosening direction. If it turns, the screw must be removed, cleaned of lubricant and reinstalled using MIL-S 22473 high strength thread locking compound, such as two ton epoxy by Devcon or Loctite 271 or equivalent. Recheck torque after thread locking compound has cured.

CAUTION: Do not permit the thread locking compound to adhere to the rubber seating surface.

c. Reinstall valve actuating lever on the valve body with rollpin, P/N 7553S-8. Install a number six machine screw and stop nut or a 3/32 inch stainless steel cotter pin or .040 inch diameter safety wire through the hole in the rollpin, holding the actuating handle to the valve body and secure.

d. Appropriate maintenance records must be kept in accordance with FAR 91.173.

Amendment 39-2228 became effective June 6, 1975.
This Amendment 39-2587 becomes effective April 30, 1976.

FOOTER: