AD 86-10-12

final rule

WYTWORNIA SPRZETU KOMUNIKACYJNEGO "PZL-RZESZOW" Model PZL-3S Engines

AD Number
86-10-12
Status
final_rule
Effective Date
Product Category
engine
Docket
Unknown
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
engine Wytwornia Sprzetu Komunikacyjnego PZL-3S WYTWORNIA SPRZETU KOMUNIKACYJNEGO "PZL-RZESZOW" Model PZL-3S Engines

Unsafe Condition

Separation of the propeller from the aircraft due to distress in the rear crankshaft, rear counterweight, or rear counterweight pins, including wear, galling, pitting, scoring, and discoloration (blue color).

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

Required Actions

Disassemble and visually inspect the rear crankshaft, rear counterweight, and rear counterweight pins. Replace any distressed parts with new parts and replace propeller attachment bolts and dowel pins if distress is found. Repeat inspections at intervals not exceeding 300 hours since last accomplishment.

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

Compliance Time

Within 25 hours after the effective date of this AD for engines with 275 hours or more since new, since overhaul, or since compliance with AD 83-21-01. For engines with less than 275 hours, perform prior to reaching 300 hours since new, since overhaul, or since compliance with AD 83-21-01.

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

Affected Aircraft

Wytwornia Sprzetu Komunikacyjnego "PZL-RZESZOW" Model PZL-3S piston engines, excluding the PZL-3S 2nd Series.

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

Federal Register Abstract

Piston Engines.

Applicability Source Text

Show captured applicability text from the source AD
AD Final Rules - DRS_86-10-12.html
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Details
AD Number:
86-10-12
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
WYTWORNIA SPRZETU KOMUNIKACYJNEGO "PZL-RZESZOW" Model PZL-3S Engines
Subject:
Piston Engines.
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
03/02/1988
Make:
Wytwornia Sprzetu Komunikacyjnego
Model:
PZL-3S
Product Type:
Engine
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Superseded AD: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Superseded By: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: 86-10-12
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5852

AD NUMBER:   86-10-12

SUBJECT HEADING:   WYTWORNIA SPRZETU KOMUNIKACYJNEGO "PZL-RZESZOW" Model PZL-3S Engines

ACTION:  

SUMMARY:  

DATES:   Effective March 2, 1988.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   86-10-12 WYTWORNIA SPRZETU KOMUNIKACYJNEGO "PZL-RZESZOW": Amendment 39- 5852. Applies to Wytwornia Sprzetu Komunikacyjnego "PZL-RZESZOW" PZL-3S piston engines.
NOTE: This AD does not apply to those PZL-3S piston engine models which are designated as the PZL- 3S 2nd Series.
Compliance is required as indicated, unless already accomplished.
To prevent separation of the propeller from the aircraft, accomplish the following:
(a) For engines with 275 hours or more since new, since overhaul, or since compliance with AD 83-21- 01, Amendment 39-4743 (48 FR 48222), on the effective date of this AD, perform the following within 25 hours after the effective date of this AD:
(1) Disassemble and visually inspect for distress of the rear crankshaft, rear counterweight, and rear counterweight pins.
(2) If any distress is found in the rear crankshaft, rear counterweight, or rear counterweight pins, replace distressed parts with new parts and replace the propeller attachment bolts and dowel pins with new parts.
(b) For engines with less than 275 hours since new, since overhaul, or since compliance with AD 83-21- 01 on the effective date of this AD, perform a(1) and a(2) above prior to reaching 300 hours since new, since overhaul, or since compliance with AD 83-21-01.
(c) Thereafter, perform a(1) and a(2) above at intervals not to exceed 300 hours since last accomplishment.
NOTE: Distress which has been observed during previous engine inspections includes wear, galling, pitting, scoring, and discoloration (blue color) of the counterweight pins.
(d) Aircraft may be ferried in accordance with the provisions of FAR 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, Engine Certification Office, Aircraft Certification Division, Federal Aviation Administration, New England Region, 12 New England Executive Park, Burlington, Massachusetts 01803.
(f) Upon submission of substantiating data by an owner or operator through an FAA maintenance inspector, the Manager, Engine Certification Office, New England Region, may adjust the compliance time specified in this AD.
This amendment becomes effective on March 2, 1988, as to all persons except those persons to whom it was made immediately effective by individual priority letter AD 86-10-12, issued May 21, 1986, which contained this amendment.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_86-10-12.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
86-10-12
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
WYTWORNIA SPRZETU KOMUNIKACYJNEGO "PZL-RZESZOW" Model PZL-3S Engines
Subject:
Piston Engines.
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
03/02/1988
Make:
Wytwornia Sprzetu Komunikacyjnego
Model:
PZL-3S
Product Type:
Engine
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: 86-10-12
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5852

AD NUMBER:   86-10-12

SUBJECT HEADING:   WYTWORNIA SPRZETU KOMUNIKACYJNEGO "PZL-RZESZOW" Model PZL-3S Engines

ACTION:  

SUMMARY:  

DATES:   Effective March 2, 1988.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   86-10-12 WYTWORNIA SPRZETU KOMUNIKACYJNEGO "PZL-RZESZOW": Amendment 39- 5852. Applies to Wytwornia Sprzetu Komunikacyjnego "PZL-RZESZOW" PZL-3S piston engines.
NOTE: This AD does not apply to those PZL-3S piston engine models which are designated as the PZL- 3S 2nd Series.
Compliance is required as indicated, unless already accomplished.
To prevent separation of the propeller from the aircraft, accomplish the following:
(a) For engines with 275 hours or more since new, since overhaul, or since compliance with AD 83-21- 01, Amendment 39-4743 (48 FR 48222), on the effective date of this AD, perform the following within 25 hours after the effective date of this AD:
(1) Disassemble and visually inspect for distress of the rear crankshaft, rear counterweight, and rear counterweight pins.
(2) If any distress is found in the rear crankshaft, rear counterweight, or rear counterweight pins, replace distressed parts with new parts and replace the propeller attachment bolts and dowel pins with new parts.
(b) For engines with less than 275 hours since new, since overhaul, or since compliance with AD 83-21- 01 on the effective date of this AD, perform a(1) and a(2) above prior to reaching 300 hours since new, since overhaul, or since compliance with AD 83-21-01.
(c) Thereafter, perform a(1) and a(2) above at intervals not to exceed 300 hours since last accomplishment.
NOTE: Distress which has been observed during previous engine inspections includes wear, galling, pitting, scoring, and discoloration (blue color) of the counterweight pins.
(d) Aircraft may be ferried in accordance with the provisions of FAR 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, Engine Certification Office, Aircraft Certification Division, Federal Aviation Administration, New England Region, 12 New England Executive Park, Burlington, Massachusetts 01803.
(f) Upon submission of substantiating data by an owner or operator through an FAA maintenance inspector, the Manager, Engine Certification Office, New England Region, may adjust the compliance time specified in this AD.
This amendment becomes effective on March 2, 1988, as to all persons except those persons to whom it was made immediately effective by individual priority letter AD 86-10-12, issued May 21, 1986, which contained this amendment.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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