AD 90-17-12

final rule

Airworthiness Directives; EMPRESA BRASILEIRA DE AERONAUTICA, S.A. (EMBRAER) Model EMB-120 Series Airplanes

AD Number
90-17-12
Status
final_rule
Effective Date
Product Category
aircraft
Docket
90-NM-59-AD
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
aircraft Embraer - Empresa Brasileira de Aeronautica S.A. EMB-120 Airworthiness Directives; EMPRESA BRASILEIRA DE AERONAUTICA, S.A. (EMBRAER) Model EMB-120 Series Airplanes
aircraft Embraer - Empresa Brasileira de Aeronautica S.A. EMB-120RT Airworthiness Directives; EMPRESA BRASILEIRA DE AERONAUTICA, S.A. (EMBRAER) Model EMB-120 Series Airplanes

Unsafe Condition

Engine failure due to propeller overspeed.

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

Required Actions

Install a flight idle position electromechanical lockout device in accordance with EMBRAER Service Bulletin Number 120-076-0009, Revision 1 or 2. Alternate compliance may be approved by the Manager, Atlanta Aircraft Certification Office.

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

Compliance Time

within 120 days after the effective date of this AD

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

Affected Aircraft

EMBRAER Model EMB-120 series airplanes, Serial Numbers 120004 and 120006 through 120177

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

Federal Register Abstract

Flight Idle Lockout Device

Applicability Source Text

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AD Final Rules - DRS_90-17-12.html
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AD Number:
90-17-12
Document Type:
AD Final Rules
Docket Number:
90-NM-59-AD
Subject Heading:
Airworthiness Directives; EMPRESA BRASILEIRA DE AERONAUTICA, S.A. (EMBRAER) Model EMB-120 Series Airplanes
Subject:
Flight Idle Lockout Device
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
09/17/1990
Make:
Embraer - Empresa Brasileira de Aeronautica S.A.
Model:
EMB-120 | EMB-120RT
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Superseded AD: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Superseded By: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:
Updated RGL applicability to match AD applicability; CAR C-11-185
AIRWORTHINESS DIRECTIVES FINAL RULES: 90-17-12
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   90-NM-59-AD

AMENDMENT:   39-6696

AD NUMBER:   90-17-12

SUBJECT HEADING:   Airworthiness Directives; EMPRESA BRASILEIRA DE AERONAUTICA, S.A. (EMBRAER) Model EMB-120 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective September 17, 1990.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
90-17-12 EMPRESA BRASILEIRA DE AERONAUTICA, S.A. (EMBRAER): Amendment 39- 6696. Docket No. 90-NM-59-AD.

Applicability: EMBRAER Model EMB-120 series airplanes, Serial Numbers 120004 and 120006 through 120177, certificated in any category.

Compliance: Required within 120 days after the effective date of this AD, unless previously accomplished.

To prevent engine failure due to propeller overspeed, accomplish the following:

A. Install a flight idle position electromechanical lockout device in accordance with EMBRAER Service Bulletin Number 120-076-0009, Revision 1, dated February 23, 1990, or Revision 2, dated May 3, 1990.

B. 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, Atlanta Aircraft Certification Office, FAA, Central Region.

NOTE: The request should be submitted directly to the Manager, Atlanta Aircraft Certification Office, ACE-115A, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Manager, Atlanta Aircraft Certification Office.

C. 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 EMBRAER, 276 S.W. 34th Street, Fort Lauderdale, Florida 33315. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue, S.W., Renton, Washington, or at the FAA, Central Region, Atlanta Aircraft Certification Office, 1669 Phoenix Parkway, Suite 210C, Atlanta, Georgia.

This amendment (39-6696, AD 90-17-12) becomes effective on September 17, 1990.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_90-17-12.html
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 Feedback
Details
AD Number:
90-17-12
Document Type:
AD Final Rules
Docket Number:
90-NM-59-AD
Subject Heading:
Airworthiness Directives; EMPRESA BRASILEIRA DE AERONAUTICA, S.A. (EMBRAER) Model EMB-120 Series Airplanes
Subject:
Flight Idle Lockout Device
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
09/17/1990
Make:
Embraer - Empresa Brasileira de Aeronautica S.A.
Model:
EMB-120 | EMB-120RT
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:
Updated RGL applicability to match AD applicability; CAR C-11-185
AIRWORTHINESS DIRECTIVES FINAL RULES: 90-17-12
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   90-NM-59-AD

AMENDMENT:   39-6696

AD NUMBER:   90-17-12

SUBJECT HEADING:   Airworthiness Directives; EMPRESA BRASILEIRA DE AERONAUTICA, S.A. (EMBRAER) Model EMB-120 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective September 17, 1990.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
90-17-12 EMPRESA BRASILEIRA DE AERONAUTICA, S.A. (EMBRAER): Amendment 39- 6696. Docket No. 90-NM-59-AD.

Applicability: EMBRAER Model EMB-120 series airplanes, Serial Numbers 120004 and 120006 through 120177, certificated in any category.

Compliance: Required within 120 days after the effective date of this AD, unless previously accomplished.

To prevent engine failure due to propeller overspeed, accomplish the following:

A. Install a flight idle position electromechanical lockout device in accordance with EMBRAER Service Bulletin Number 120-076-0009, Revision 1, dated February 23, 1990, or Revision 2, dated May 3, 1990.

B. 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, Atlanta Aircraft Certification Office, FAA, Central Region.

NOTE: The request should be submitted directly to the Manager, Atlanta Aircraft Certification Office, ACE-115A, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Manager, Atlanta Aircraft Certification Office.

C. 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 EMBRAER, 276 S.W. 34th Street, Fort Lauderdale, Florida 33315. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue, S.W., Renton, Washington, or at the FAA, Central Region, Atlanta Aircraft Certification Office, 1669 Phoenix Parkway, Suite 210C, Atlanta, Georgia.

This amendment (39-6696, AD 90-17-12) becomes effective on September 17, 1990.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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