AD 88-03-51 R1

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AD Number:
88-03-51 R1
Document Type:
AD Final Rules
Docket Number:
89-NM-132-AD
Subject Heading:
Airworthiness Directives; BOEING OF CANADA, LTD., DE HAVILLAND DIVISION Model DHC-8-100 Series Airplanes
Subject:
AFM Changes - Nose Gear
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
03/19/1990
Make:
Bombardier Inc.
Model:
DHC-8-101 | DHC-8-102 | DHC-8-103 | DHC-8-106
Product Type:
Aircraft
Product Subtype:
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Superseded AD: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Superseded By: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: 88-03-51 R1
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   89-NM-132-AD

AMENDMENT:   39-6505

AD NUMBER:   88-03-51 R1

SUBJECT HEADING:   Airworthiness Directives; BOEING OF CANADA, LTD., DE HAVILLAND DIVISION Model DHC-8-100 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective March 19, 1990.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   88-03-51 R1 BOEING OF CANADA, LTD., DE HAVILLAND DIVISION: Amendment 39- 5868 as amended by Amendment 39-6505. Docket No. 89-NM-132-AD.

Applicability: DeHavilland Model DHC-8-100 series airplanes, Serial Numbers 3 through 119, inclusive, with Modification No. 8/0467 incorporated, equipped with Eldec Proximity Switch Electronic Control Unit (PSEU), P/N 8-410-03, 8-410-04, or 8-410-05, certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To preclude the possibility of the nose gear cockpit indication system indicating erroneous nose gear position, accomplish the following:

A. Within 24 hours after March 25, 1988 (the effective date of AD 88-03-51) add the following to the Limitations Section of the Airplane Flight Manual (AFM) and notify all crew members. This may be accomplished by inserting a copy of this AD in the AFM:

"1. Perform the following check prior to each flight. This check is to be performed even when the airplane is being operated with the anti-skid inoperative under the minimum equipment list:

a. Anti-skid switch - "OFF"

b. Anti-skid switch - "ON"

c. Check that inboard and outboard anti-skid caution lights illuminate, and then extinguish within 6 seconds. Should the lights fail to function as noted above, dispatch is prohibited until maintenance action clears the fault."

"2. While performing the 'After Take Off' and 'Approach' procedures:

a. Monitor the landing gear indication system during landing gear retraction and extension.

b. If there is any irregularity in gear indication or operation at any time throughout the flight, the gear must be confirmed DOWN AND LOCKED using the alternate down-lock verification system, irrespective of gear DOWN AND LOCKED (green) indication on the normal landing gear indicating system."

B. Any in-flight landing gear irregularity must be corrected prior to further flight.

C. Within 60 days after the effective date of this amendment, modify the landing gear control system, in accordance with deHavilland Service Bulletin 8-32-70, Revision B, dated December 2, 1988. This modification constitutes terminating action for the requirements of paragraphs A. and B. of this AD, and the revised operating procedures may be removed from the AFM.

D. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, New York Aircraft Certification Office, FAA, New England Region.

NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it to the Manager, Standardization Branch, ANM-113.

E. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD.

All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Boeing of Canada, Ltd., deHavilland Division, Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or the FAA, New England Region, New York Aircraft Certification Office, 181 South Franklin Avenue, Room 202, Valley Stream, New York.

This AD revises AD 88-03-51, Amendment 39-5868.

This amendment (39-6505, AD 88-03-51 R1) becomes effective on March 19, 1990.

FOOTER: