AD 72-23-01

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AD Number:
72-23-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Handley Page (Jetstream Aircraft LTD) HP-137 Mark I Airplanes
Subject:
Nacelle Fire Prevention
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
05/05/1975
Make:
British Aerospace Regional Aircraft
Model:
H.P. 137 Jetstream Mk. 1
Product Type:
Aircraft
Product Subtype:
Small/Large Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 72-23-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2197

AD NUMBER:   72-23-01

SUBJECT HEADING:   Airworthiness Directives; Handley Page (Jetstream Aircraft LTD) HP-137 Mark I Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective May 5, 1975.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
72-23-01 HANDLEY PAGE (JETSTREAM AIRCRAFT LTD): Amendment 39-1548 as amended by Amendment 39-1585 and 39-1605 is further amended by Amendment 39-2197. Applies to Handley Page HP-137 Mark I airplanes.

Compliance is required on or before March 24, 1973, unless already accomplished, except that the airplane may be flown in accordance with FAR Section 21.197 and 21.199 to a base where the alteration can be performed.

To prevent fires, which could result from engine rotor failures and combustion chamber burn through torching flames, in the areas of the nacelle forward of the existing vertical firewall from entering the area aft of the vertical firewall and damaging wing structure or burning into the wing fuel tank in this area, install additional fire shielding to the lower nacelle area down from and aft of the existing vertical firewall in accordance with the following:

(a) Using fireproof materials which comply with FAR 23.1191, extend the existing vertical firewall and provide fireproof shielding for the area aft of the extended vertical firewall in accordance with Jetstream Aircraft Limited Modification No. 5001, Part 1, Issue 1, dated September, 1971, and Part 2, Issue 2, dated December, 1971, or other equivalent modification approved by the Chief, Engineering and Manufacturing Branch of an FAA Region (or, in the case of the Western Region, the Aircraft Engineering Division).

NOTE: Copies of Jetstream Aircraft Limited Modification No. 5001 may be obtained from the FAA, Engineering and Manufacturing Branch in the FAA Regions (or in the case of the Western Region, the Aircraft Engineering Division).

Amendment 39-1548 became effective October 31, 1972.

Amendment 39-1585 was effective upon publication in the Federal Register as to all persons except those persons to whom it was made immediately effective by the telegram, dated December 2, 1972, which contained this amendment.

Amendment 39-1605 was effective upon publication in the Federal Register as to all persons except those persons to whom it was made immediately effective by the telegram, dated January 23, 1973, which contained this amendment.

This amendment 39-2197 becomes effective May 5, 1975.

FOOTER: