AD 80-09-05

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AD Number:
80-09-05
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
BOEING 737-100 and -200 Series Airplanes
Subject:
Horizontal Stabilizer Trim Actuator
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
05/06/1980
Make:
The Boeing Company
Model:
737-100 Series | 737-200 Series
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Superseded AD: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Superseded By: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: 80-09-05
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-3760

AD NUMBER:   80-09-05

SUBJECT HEADING:   BOEING 737-100 and -200 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective May 6, 1980.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
80-09-05 BOEING: Amendment 39-3760. Applies to all 737-100 and -200 series airplanes certificated at takeoff weights in excess of 97,800 pounds and containing the horizontal stabilizer trim actuator P/N 10-61326-4 or P/N 10-61326-5.

NOTE: The 737 airplanes from line 482 and on were delivered with horizontal stabilizer trim actuator P/N 10-61326-6. This AD will apply to those 737 airplanes line number 482 and on if P/N 10-61326-4 or -5 have been exchanged for P/N 10-61326-6.

Compliance is required as follows: To assure sufficient horizontal stabilizer trim capability, accomplish either A, B or C below within the next six (6) months after the effective date of this AD, unless already accomplished.

A. For horizontal stabilizer trim actuators having the P/N 10-61326-4 or P/N 10-61326- 5, test the actuator stall torque in accordance with Boeing Service Bulletin No. 737-27-1101, dated February 1, 1980. The actuators found to have less than 350 inch pounds of torque must be replaced with a serviceable actuator P/N 10-61326-4, -5, or -6. Thereafter, for the actuators P/N 10-61326-4 and -5, conduct repetitive torque test per the "Actual Stall Torque/Maximum Test Interval" chart, Figure 2, of that service bulletin at intervals not to exceed the maximum test intervals (hours) indicated by the curve on the chart.

B. Replace the horizontal stabilizer trim actuator, Boeing P/N 10-61326-4 or -5 with stabilizer trim actuator, Boeing P/N 10-63126-6 in accordance with Boeing Service Bulletin No. 737-27-1101, dated February 1, 1980. Replacing the stabilizer trim actuator, Boeing P/N 10- 61326-4 or -5, with Boeing P/N 10-61326-6 is the terminating requirement for this AD.

C. Perform an equivalent inspection and/or installation approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region.

The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124. These documents may also be examined at FAA, Northwest Region, 9010 East Marginal Way South, Seattle, Washington 98108.

This amendment supersedes AD 70-25-10.

This amendment becomes effective May 6, 1980.

FOOTER: