AD 82-12-04

final rule

Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)

AD Number: 82-12-04
Status: final_rule
Effective Date: June 7, 1982
Product Category: appliance
Docket: Unknown
FR Citation: This information is not available.

Applicability

Type	Manufacturer	Model	Details
aircraft	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	401	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
aircraft	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	401A	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
aircraft	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	401B	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
aircraft	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	402	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
aircraft	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	402A	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
aircraft	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	402B	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
aircraft	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	414	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
aircraft	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	Power turbine and Governor Assemblies	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
aircraft	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	N22B	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
aircraft	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	N24A	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	401	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	401A	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	401B	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	402	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	402A	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	402B	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	414	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	Power turbine and Governor Assemblies	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	N22B	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	N24A	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	250-B15G	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	250-B17	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	250-B17B	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)
appliance	Cessna Aircraft Company \| Detroit Diesel Allison \| Nomad TC Pty Ltd \| Rolls-Royce Corporation	250-B17C	Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)

Unsafe Condition

The Detroit Diesel Allison Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708 (Woodward P/N 8210-018), may have improper calibration leading to potential governor failure, which could result in uncommanded changes in engine power or propeller pitch.

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

Required Actions

Complete a ground functional check per DDA Alert Service Bulletin No. CEB-A-87 or CEB-A-1151 (or later FAA-approved revision). Replace governors that fail the check prior to next flight.

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

Compliance Time

within the next 50 hours time in service or the next 30 days, whichever occurs first, after the effective date of this AD

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

Affected Aircraft

Detroit Diesel Allison Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708 (Woodward P/N 8210-018) with specified serial numbers listed in the AD, installed on or spares for DDA 250-B15G, B17, B17B, B17C engines on Cessna 401, 401A, 401B, 402, 402A, 402B, 414 airplanes modified per STC SA117NW and GAF Nomad N22B/N24A.

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

Federal Register Abstract

Combined Power Turbine and Propeller Governor Assembly

Applicability Source Text

Show captured applicability text from the source AD

AD Final Rules - DRS_82-12-04.html
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Details
AD Number:
82-12-04
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined...Show more
Subject:
Combined Power Turbine and Propeller Governor Assembly
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
06/07/1982
Make:
Cessna Aircraft Company | Detroit Diesel Allison | Nomad TC Pty Ltd | Rolls-Royce Corporation
Model:
401 | 401A | 401B | 402 | 402A | 402B | 414 | Power turbine and Governor Assemblies | N22B | N24A | ...Show more
Product Type:
Appliance
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 82-12-04
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-4396

AD NUMBER:   82-12-04

SUBJECT HEADING:   Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)


ACTION:  

SUMMARY:  

DATES:   Effective June 7, 1982.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
82-12-04 DETROIT DIESEL ALLISON: Amendment 39-4396. Applies to Detroit Diesel Allison (DDA) combined power turbine and propeller governor assembly, DDA P/N 6875708, (Woodward P/N 8210-018) with the following serial numbers:

904780A	1751790A
1282800A	1751791A
1282910A	1751812A
1282921A	1752008A thru 1752011A
1283049A thru 1283081A	1752015A
1585707A thru 1585740A	1752147A
1704950A thru 1704968A	1752148A
1709149A	1752132A
171127A	1753623A
1713260A thru 1713263A	1753624A
1720002A	1806013A
1720003A	1806047A
1720471A	1807845A
1720472A	1807846A
1720989A	1807957A
1740062A	1807958A
1740063	1808591A
1740231A	1808973A
1743198A	1812386A
1743199A	1812819A
1746476A	1814712A
1746508A	1814713A
1747637A	1816433A
1747638A	1819864A
1747642A thru 1747645A	1820615A thru 1820617A
1747750A	1820648A
1747751A	1821184A
1747817A	1821845A
1747948A	1821854A
1748560A	1821882A
1749652A	1823181A
1750586A	1823182A

The above governors are installed on, or are spares for, Detroit Diesel Allison 250-B15G, B17, B17B, and B17C engines which are installed on, but not limited to, Cessna 401, 401A, 401B, 402, 402A, 402B, and 414 airplanes modified in accordance with STC SA117NW and Government Aircraft Factories (GAF) Nomad N22B and N24A.

Compliance is required, unless already accomplished, within the next 50 hours time in service or the next 30 days, whichever occurs first, after the effective date of this AD.

a. Complete the ground functional check in accordance with the accomplishment instructions of Detroit Diesel Allison Alert Service Bulletin No. CEB-A-87 or CEB-A-1151, or later FAA-approved revision, as appropriate.

b. Governors that fail the check must be removed and replaced with a properly calibrated governor prior to next flight.

Equivalent means of compliance may be approved by the Chief, Chicago Aircraft Certification Office, Federal Aviation Administration (FAA), 2300 East Devon Avenue, Chicago, Illinois.

NOTE: The following service bulletins refer to this subject:

DDA No. CEB-A-87, for 250-B15G engines, dated February 5, 1982.

DDA No. CEB-A-1151, for 250-B17, -B17B, and -B17C engines, dated February 5, 1982.

Woodward No. 33577, dated February 1982.

This amendment becomes effective June 7, 1982

FOOTER:

Document Text

Show stored source text (verify against official source)

AD Final Rules - DRS_82-12-04.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
82-12-04
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined...Show more
Subject:
Combined Power Turbine and Propeller Governor Assembly
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
06/07/1982
Make:
Cessna Aircraft Company | Detroit Diesel Allison | Nomad TC Pty Ltd | Rolls-Royce Corporation
Model:
401 | 401A | 401B | 402 | 402A | 402B | 414 | Power turbine and Governor Assemblies | N22B | N24A | ...Show more
Product Type:
Appliance
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 82-12-04
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-4396

AD NUMBER:   82-12-04

SUBJECT HEADING:   Airworthiness Directives; DETROIT DIESEL ALLISON: Applies to Detroit Diesel Allison (DDA) Combined Power Turbine and Propeller Governor Assembly, DDA P/N 6875708, (Woodward P/N 8210-018)


ACTION:  

SUMMARY:  

DATES:   Effective June 7, 1982.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
82-12-04 DETROIT DIESEL ALLISON: Amendment 39-4396. Applies to Detroit Diesel Allison (DDA) combined power turbine and propeller governor assembly, DDA P/N 6875708, (Woodward P/N 8210-018) with the following serial numbers:

904780A	1751790A
1282800A	1751791A
1282910A	1751812A
1282921A	1752008A thru 1752011A
1283049A thru 1283081A	1752015A
1585707A thru 1585740A	1752147A
1704950A thru 1704968A	1752148A
1709149A	1752132A
171127A	1753623A
1713260A thru 1713263A	1753624A
1720002A	1806013A
1720003A	1806047A
1720471A	1807845A
1720472A	1807846A
1720989A	1807957A
1740062A	1807958A
1740063	1808591A
1740231A	1808973A
1743198A	1812386A
1743199A	1812819A
1746476A	1814712A
1746508A	1814713A
1747637A	1816433A
1747638A	1819864A
1747642A thru 1747645A	1820615A thru 1820617A
1747750A	1820648A
1747751A	1821184A
1747817A	1821845A
1747948A	1821854A
1748560A	1821882A
1749652A	1823181A
1750586A	1823182A

The above governors are installed on, or are spares for, Detroit Diesel Allison 250-B15G, B17, B17B, and B17C engines which are installed on, but not limited to, Cessna 401, 401A, 401B, 402, 402A, 402B, and 414 airplanes modified in accordance with STC SA117NW and Government Aircraft Factories (GAF) Nomad N22B and N24A.

Compliance is required, unless already accomplished, within the next 50 hours time in service or the next 30 days, whichever occurs first, after the effective date of this AD.

a. Complete the ground functional check in accordance with the accomplishment instructions of Detroit Diesel Allison Alert Service Bulletin No. CEB-A-87 or CEB-A-1151, or later FAA-approved revision, as appropriate.

b. Governors that fail the check must be removed and replaced with a properly calibrated governor prior to next flight.

Equivalent means of compliance may be approved by the Chief, Chicago Aircraft Certification Office, Federal Aviation Administration (FAA), 2300 East Devon Avenue, Chicago, Illinois.

NOTE: The following service bulletins refer to this subject:

DDA No. CEB-A-87, for 250-B15G engines, dated February 5, 1982.

DDA No. CEB-A-1151, for 250-B17, -B17B, and -B17C engines, dated February 5, 1982.

Woodward No. 33577, dated February 1982.

This amendment becomes effective June 7, 1982

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.

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