AD 85-01-01

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AD Number:
85-01-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Beech Models 65-88, 65-90, 65-A90, B90, C90, E90, 100, A100, and B100 Aircraft
Subject:
Acrylic Windows
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
02/06/1985
Make:
Textron Aviation Inc.
Model:
100 | 65-88 | 65-90 | 65-A90 | A100 | B90 | C90
Product Type:
Aircraft
Product Subtype:
Small 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Superseded AD: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Superseded By: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: 85-01-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-4974

AD NUMBER:   85-01-01

SUBJECT HEADING:   Airworthiness Directives; Beech Models 65-88, 65-90, 65-A90, B90, C90, E90, 100, A100, and B100 Aircraft

ACTION:  

SUMMARY:  

DATES:   Effective February 6, 1985.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
85-01-01 BEECH: Amendment 39-4974. Applies to Models 65-88 (S/Ns LP-1 through LP-26, LP-28, and LP-30 through LP-47); 65-90, 65-A90, B90, and C90 (S/Ns LJ-1 through LJ-680); E90 (S/Ns LW-1 through LW-178); 100 and A100 (S/Ns B-1 through B-226); and B100 (S/Ns BE-1 through BE-8) certificated in any category in which all cast acrylic windows have not been replaced with stretched acrylic windows.

Compliance: Required as indicated, unless already accomplished.

To prevent failures of a cast acrylic window and resulting decompression and possible occupant injury, accomplish the following:

(a) Within 50 hours time-in-service (TIS) after the effective date of this AD or 300 hours TIS after the last inspection per AD 81-12-01 whichever occurs later, and each 300 hours TIS thereafter, and within 50 hours TIS after any stripping and repainting in the area of the window;

(1) Visually inspect each cast acrylic window in accordance with Beech Service Bulletin No. 2011 (SB 2011).

(2) If the above inspection discloses any crack, fissure, stress craze or scratch in any window, prior to further pressurized flight, replace this window with a stretched acrylic window of the appropriate part number specified in Paragraph (b).

(b) Within one calendar year after the effective date of the AD, replace each cast acrylic window with one of the stretched acrylic windows listed below.

WINDOW	BEECH PART NUMBER
Oval, baggage area	50-440014-837 or -838
Cockpit, side, standard	50-420066-317 or -318
Cockpit, side, oversize	50-420066-353 or -354
Round, Cabin	50-420013-1053

NOTE: After installing a stretched acrylic window make an appropriate entry in the Aircraft Maintenance Record which, along with previous entries, clearly shows each location at which a stretched acrylic window has been installed.

(c) Upon installation of all stretched acrylic windows per Paragraph (b), this AD is no longer applicable.

(d) Compliance with Paragraphs (a) and (b) is not required if the pressurization system is deactivated as follows, and the aircraft is operated in accordance with this limitation:

(1) Secure the "Test/Dump" switch in the "Dump" position; and

(2) Fabricate a placard, "CABIN PRESSURIZATION PROHIBITED" of 3/16-inch or larger letters and install it on the control panel adjacent to pressurization system controls; and

(3) Insert a copy of this AD in the "Limitations" section of the airplane flight manual.

(4) Make an appropriate entry in the Aircraft Maintenance Record showing compliance with this paragraph.

(5) The provisions of this paragraph may be accomplished by the holder of at least a private pilot certificate issued under Part 61 of the Federal Aviation Regulations on any airplane owned or operated by that person, provided the airplane is not used in air carrier service.

(e) Aircraft may be flown unpressurized in accordance with FAR 21.197 to a location where the inspections/repairs required by this AD can be performed.

(f) An equivalent method of compliance with this AD may be used when approved by the Manager, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid- Continent Airport, Wichita, Kansas 67209; telephone (316) 946-4400.

This AD supersedes AD 81-12-01, Amendment 39-4126.

This amendment becomes effective February 6, 1985.

FOOTER: