AD 87-25-10

final rule

GROB Models G103 TWIN II and G103A TWIN II ACRO Gliders

AD Number
87-25-10
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.
Technical illustration of an aircraft flight control surface and actuator
Problem area Flight controls

Applicability

TypeManufacturerModelDetails
aircraft Burkhart Grob Luft-Und G103 Twin II GROB Models G103 TWIN II and G103A TWIN II ACRO Gliders
aircraft Burkhart Grob Luft-Und G103A Twin II Acro GROB Models G103 TWIN II and G103A TWIN II ACRO Gliders

Unsafe Condition

Failure of the rudder lever could result in the glider becoming uncontrollable.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Within 5 hours time in service after the effective date, visually inspect the rudder lever P/N 103B-4430 using a 10 power magnifying glass and flashlight per GROB Repair Instruction No. 315-33/1. Replace damaged parts before further flight with rudder lever P/N 103B-4430/1 and two rudder stop screws M 6 x 45 mm per GROB Repair Instruction No. 315-33/2. Prior to March 15, 1988, replace any non-compliant rudder lever and screws with specified parts per the same repair instructions.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within the next 5 hours time in service after the effective date of this AD, unless compliance with Paragraph (c) has been accomplished. Prior to March 15, 1988 for replacement under Paragraph (c).

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

GROB Models G103 TWIN II and G103A TWIN II ACRO gliders, Serial Nos. 3730 through 3878, and Serial Nos. 33879 through 34078 (ACRO with supplement K)

AI-generated summary from the source AD text. Verify against the official source before acting.

Federal Register Abstract

Rudder Lever

Applicability Source Text

Show captured applicability text from the source AD
AD Final Rules - DRS_87-25-10.html
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AD Number:
87-25-10
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
GROB Models G103 TWIN II and G103A TWIN II ACRO Gliders
Subject:
Rudder Lever
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
04/15/1988
Make:
Burkhart Grob Luft-Und
Model:
G103 Twin II | G103A Twin II Acro
Product Type:
Aircraft
Product Subtype:
Glider
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 87-25-10
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5880

AD NUMBER:   87-25-10

SUBJECT HEADING:   GROB Models G103 TWIN II and G103A TWIN II ACRO Gliders

ACTION:  

SUMMARY:  

DATES:   Effective April 15, 1988.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
87-25-10 GROB: Amendment 39-5880. Applies to GROB Models G103 TWIN II and G103A TWIN II ACRO gliders, Serial Nos. 3730 through 3878, and Serial Nos. 33879 through 34078 (ACRO with supplement K), certificated in all categories.

Compliance is required, as indicated, unless already accomplished.

To prevent failure of the rudder lever, which could result in the glider becoming uncontrollable, accomplish the following:

(a) Within the next 5 hours time in service after the effective date of this AD, unless compliance with Paragraph (c) has been accomplished, visually inspect the rudder lever, P/N 103B-4430, using a 10 power or greater magnifying glass and flashlight in accordance with Paragraph 1 of GROB Repair Instruction No. 315-33/1 for Service Bulletin (SB) TM 315-33, dated August 3, 1987.

(b) Replace damaged parts before further flight, with rudder lever, P/N 103B- 4430/1, and two rudder stop screws, M 6 x 45 (mm), in accordance with GROB Repair Instruction No. 315-33/2 for SB TM 315-33, dated August 3, 1987.

(c) Prior to March 15, 1988, replace any rudder lever and rudder stop screws not replaced in accordance with Paragraph (b) of this AD with rudder lever, P/N 103B-4430/1, and two rudder stop screws, M 6 x 45 (mm), in accordance with GROB Repair Instruction No. 315- 33/2 for SB TM 315-33, dated August 3, 1987.

(d) Aircraft may be ferried in accordance with the provisions of Federal Aviation Regulations 21.197 and 21.199 to a base where the AD can be accomplished.

(e) Upon request, an equivalent means of compliance with the requirements of this AD may be approved by the Manager, Brussels Aircraft Certification Office, Europe, Africa, and Middle East Office, FAA c/o American Embassy, 15 Rue de la Loi B-1040 Brussels, Belgium, or the Manager, New York Aircraft Certification Office, Aircraft Certification Division, New England Region, Federal Aviation Administration, 181 South Franklin Avenue, Room 202, Valley Stream, New York 11581.

(f) Upon submission of substantiating data by an owner or operator through an FAA maintenance inspector, the Manager, Brussels Aircraft Certification Office, or the Manager, New York Aircraft Certification Office, may adjust the compliance time specified in this AD.

GROB Repair Instructions No. 315-33/1 and /2 for SB TM 315-33, dated August 3, 1987, identified and described in this document, 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 GROB Systems, Inc., Aircraft Division, I-75 and Airport Drive, Bluffton, Ohio 45817.

These documents may also be examined at the Office of the Regional Counsel, Federal Aviation Administration, New England Region, 12 New England Executive Park, Burlington, Massachusetts 01803, Room 311, Docket No. 87-ANE-45, between the hours of 8:00 a.m. and 4:30 p.m., Monday through Friday, except federal holidays.

This amendment 39-5880 becomes effective April 15, 1988, as to all persons except those persons to whom it was made immediately effective by individual priority letter AD 87- 25-10, issued December 11, 1987, which contained this amendment.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_87-25-10.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
87-25-10
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
GROB Models G103 TWIN II and G103A TWIN II ACRO Gliders
Subject:
Rudder Lever
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
04/15/1988
Make:
Burkhart Grob Luft-Und
Model:
G103 Twin II | G103A Twin II Acro
Product Type:
Aircraft
Product Subtype:
Glider
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 87-25-10
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5880

AD NUMBER:   87-25-10

SUBJECT HEADING:   GROB Models G103 TWIN II and G103A TWIN II ACRO Gliders

ACTION:  

SUMMARY:  

DATES:   Effective April 15, 1988.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
87-25-10 GROB: Amendment 39-5880. Applies to GROB Models G103 TWIN II and G103A TWIN II ACRO gliders, Serial Nos. 3730 through 3878, and Serial Nos. 33879 through 34078 (ACRO with supplement K), certificated in all categories.

Compliance is required, as indicated, unless already accomplished.

To prevent failure of the rudder lever, which could result in the glider becoming uncontrollable, accomplish the following:

(a) Within the next 5 hours time in service after the effective date of this AD, unless compliance with Paragraph (c) has been accomplished, visually inspect the rudder lever, P/N 103B-4430, using a 10 power or greater magnifying glass and flashlight in accordance with Paragraph 1 of GROB Repair Instruction No. 315-33/1 for Service Bulletin (SB) TM 315-33, dated August 3, 1987.

(b) Replace damaged parts before further flight, with rudder lever, P/N 103B- 4430/1, and two rudder stop screws, M 6 x 45 (mm), in accordance with GROB Repair Instruction No. 315-33/2 for SB TM 315-33, dated August 3, 1987.

(c) Prior to March 15, 1988, replace any rudder lever and rudder stop screws not replaced in accordance with Paragraph (b) of this AD with rudder lever, P/N 103B-4430/1, and two rudder stop screws, M 6 x 45 (mm), in accordance with GROB Repair Instruction No. 315- 33/2 for SB TM 315-33, dated August 3, 1987.

(d) Aircraft may be ferried in accordance with the provisions of Federal Aviation Regulations 21.197 and 21.199 to a base where the AD can be accomplished.

(e) Upon request, an equivalent means of compliance with the requirements of this AD may be approved by the Manager, Brussels Aircraft Certification Office, Europe, Africa, and Middle East Office, FAA c/o American Embassy, 15 Rue de la Loi B-1040 Brussels, Belgium, or the Manager, New York Aircraft Certification Office, Aircraft Certification Division, New England Region, Federal Aviation Administration, 181 South Franklin Avenue, Room 202, Valley Stream, New York 11581.

(f) Upon submission of substantiating data by an owner or operator through an FAA maintenance inspector, the Manager, Brussels Aircraft Certification Office, or the Manager, New York Aircraft Certification Office, may adjust the compliance time specified in this AD.

GROB Repair Instructions No. 315-33/1 and /2 for SB TM 315-33, dated August 3, 1987, identified and described in this document, 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 GROB Systems, Inc., Aircraft Division, I-75 and Airport Drive, Bluffton, Ohio 45817.

These documents may also be examined at the Office of the Regional Counsel, Federal Aviation Administration, New England Region, 12 New England Executive Park, Burlington, Massachusetts 01803, Room 311, Docket No. 87-ANE-45, between the hours of 8:00 a.m. and 4:30 p.m., Monday through Friday, except federal holidays.

This amendment 39-5880 becomes effective April 15, 1988, as to all persons except those persons to whom it was made immediately effective by individual priority letter AD 87- 25-10, issued December 11, 1987, which contained this amendment.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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