AD 81-23-05
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-28-151 | Airworthiness Directives; Piper Model PA-28-151 and PA-28-161 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-28-161 | Airworthiness Directives; Piper Model PA-28-151 and PA-28-161 Airplanes |
Unsafe Condition
Electrical contact between the seat springs and the battery, and damage to the battery box cover caused by contact with seat springs, could result in an inflight fire.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect seat springs and battery box for damage or electrical contact, repair or replace damaged components, install a placard restricting rear seat use, ensure proper seat positioning, and modify the seat base per specified service kits within 50 hours time-in-service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Required prior to further flight and as indicated in the body of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Piper Model PA-28-151 (S/N 28-7415001 through 28-7715314) and PA-28-161 (S/N 28-7716001 through 28-8216066)
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Seat Springs and Battery Box
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_81-23-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 81-23-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Model PA-28-151 and PA-28-161 Airplanes Subject: Seat Springs and Battery Box Status: Current Citation: This information is not available. Citation Publish Date: 03/01/1982 Effective Date: 03/08/1982 Make: Piper Aircraft Inc. Model: PA-28-151 | PA-28-161 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 81-23-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4333 AD NUMBER: 81-23-05 SUBJECT HEADING: Airworthiness Directives; Piper Model PA-28-151 and PA-28-161 Airplanes ACTION: SUMMARY: DATES: Effective March 8, 1982. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 81-23-05 PIPER AIRCRAFT CORPORATION: Amendment 39-4333. Applies to Piper Aircraft Models PA-28-151 (S/N 28-7415001 through 28-7715314), and PA-28-161 (S/N 28-7716001 through 28-8216066) airplanes certificated in any category. COMPLIANCE: Required prior to further flight and as indicated in the body of this AD. To prevent possible inflight fire, accomplish the following: A) On Piper Models PA-28-151 (S/N 28-7415001 through 28-7715314) and PA-28-161 (S/H 28-7716001 through 28-7916210) airplanes: (1) Remove the rear seat base and check for any broken springs or evidence of electrical contact between the seat springs and the battery. Check the battery box and cover for any evidence of damage, especially wear of the battery box cover caused by contact with the seat springs. If the seat spring or the battery box cover is damaged, repair or replace with serviceable items. If not, reinstall the battery box cover and ensure that all fasteners lock and that the cover is secure. (2) Install the seat base, ensuring that the saddle clamps at the rear of the seat, left and right, are engaged. When the seat base is lowered into position, the forward edge of the seat legs must be at least 0.80 inch aft of the forward vertical face of the wing spar box. (3) Install a placard in clear view of the pilot stating "DO NOT USE REAR SEAT FOR PASSENGERS OR CARGO" and operate the airplane in accordance with this limitation. The placard may be made from any convenient durable material with contrasting color letters at least 1/4 inch high. (4) The requirements of paragraphs A)(1), (2) and (3) may be complied with by a person authorized to perform preventive maintenance in accordance with Federal Aviation Regulation 43.3(h), except that repair or replacement must be accomplished by appropriately rated persons. (5) The placard required by paragraph A) (3) may be removed after the rear seat has been modified in accordance with the instructions contained in Piper Aircraft Corporation Service Kit No. 764, 303V, SEAT AFT BOTTOM MODIFICATION, dated October 29, 1981, and Piper Service Bulletin 631B, dated October 29, 1981. B) On Piper Models PA-28-161 (S/N 28-7916211 through 28-8216066) airplanes: (1) Remove the rear seat base and check for any broken springs or evidence of electrical contact between the seat springs and the battery. Check the battery box and cover for any evidence of damage, especially wear of the battery box cover caused by contact with the seat springs. If the seat spring or the battery box cover is damaged, repair or replace with serviceable items. If not, reinstall the battery box cover and ensure that all fasteners lock and that the cover is secure. (2) Install the seat base, ensuring that the saddle clamps at the rear of the seat, left and right, are engaged. Ensure that the forward legs on the rear seat base are aft of the reference line established by the placard (Piper P/N 35669-194) on top of the spar box, reference Piper Service Bulletin 631B dated October 29, 1981. (3) Before each flight, check that the rear seat base is properly positioned as indicated by the placard. (4) The requirements of paragraphs B)(1), (2) and (3) may be complied with by a person authorized to perform preventive maintenance in accordance with Federal Aviation Regulation 43.3(h), except that repair or replacement must be accomplished by appropriately rated persons. (5) Within the next 50 hours time-in-service after the effective date of this AD, modify the rear seat base in accordance with the instructions contained in Piper Aircraft Corporation Service Kit No. 764 3O3V, SEAT AFT BOTTOM MODIFICATION, dated October 29, 1981, and Piper Service Bulletin 631B, dated October 29, 1981. The repeat preflight checks of paragraph B)(3) may be discontinued after this modification. C) An equivalent method of compliance may be approved by Chief, Engineering and Manufacturing Branch, FAA, Southern Region, P.O. Box 20636, Atlanta, Georgia 30320. This amendment becomes effective on March 8, 1982, to all persons except those to whom it has already been made effective by priority letter from the FAA dated November 3, 1981, and is identified as AD 81-23-05. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_81-23-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 81-23-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Model PA-28-151 and PA-28-161 Airplanes Subject: Seat Springs and Battery Box Status: Current Citation: This information is not available. Citation Publish Date: 03/01/1982 Effective Date: 03/08/1982 Make: Piper Aircraft Inc. Model: PA-28-151 | PA-28-161 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 81-23-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4333 AD NUMBER: 81-23-05 SUBJECT HEADING: Airworthiness Directives; Piper Model PA-28-151 and PA-28-161 Airplanes ACTION: SUMMARY: DATES: Effective March 8, 1982. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 81-23-05 PIPER AIRCRAFT CORPORATION: Amendment 39-4333. Applies to Piper Aircraft Models PA-28-151 (S/N 28-7415001 through 28-7715314), and PA-28-161 (S/N 28-7716001 through 28-8216066) airplanes certificated in any category. COMPLIANCE: Required prior to further flight and as indicated in the body of this AD. To prevent possible inflight fire, accomplish the following: A) On Piper Models PA-28-151 (S/N 28-7415001 through 28-7715314) and PA-28-161 (S/H 28-7716001 through 28-7916210) airplanes: (1) Remove the rear seat base and check for any broken springs or evidence of electrical contact between the seat springs and the battery. Check the battery box and cover for any evidence of damage, especially wear of the battery box cover caused by contact with the seat springs. If the seat spring or the battery box cover is damaged, repair or replace with serviceable items. If not, reinstall the battery box cover and ensure that all fasteners lock and that the cover is secure. (2) Install the seat base, ensuring that the saddle clamps at the rear of the seat, left and right, are engaged. When the seat base is lowered into position, the forward edge of the seat legs must be at least 0.80 inch aft of the forward vertical face of the wing spar box. (3) Install a placard in clear view of the pilot stating "DO NOT USE REAR SEAT FOR PASSENGERS OR CARGO" and operate the airplane in accordance with this limitation. The placard may be made from any convenient durable material with contrasting color letters at least 1/4 inch high. (4) The requirements of paragraphs A)(1), (2) and (3) may be complied with by a person authorized to perform preventive maintenance in accordance with Federal Aviation Regulation 43.3(h), except that repair or replacement must be accomplished by appropriately rated persons. (5) The placard required by paragraph A) (3) may be removed after the rear seat has been modified in accordance with the instructions contained in Piper Aircraft Corporation Service Kit No. 764, 303V, SEAT AFT BOTTOM MODIFICATION, dated October 29, 1981, and Piper Service Bulletin 631B, dated October 29, 1981. B) On Piper Models PA-28-161 (S/N 28-7916211 through 28-8216066) airplanes: (1) Remove the rear seat base and check for any broken springs or evidence of electrical contact between the seat springs and the battery. Check the battery box and cover for any evidence of damage, especially wear of the battery box cover caused by contact with the seat springs. If the seat spring or the battery box cover is damaged, repair or replace with serviceable items. If not, reinstall the battery box cover and ensure that all fasteners lock and that the cover is secure. (2) Install the seat base, ensuring that the saddle clamps at the rear of the seat, left and right, are engaged. Ensure that the forward legs on the rear seat base are aft of the reference line established by the placard (Piper P/N 35669-194) on top of the spar box, reference Piper Service Bulletin 631B dated October 29, 1981. (3) Before each flight, check that the rear seat base is properly positioned as indicated by the placard. (4) The requirements of paragraphs B)(1), (2) and (3) may be complied with by a person authorized to perform preventive maintenance in accordance with Federal Aviation Regulation 43.3(h), except that repair or replacement must be accomplished by appropriately rated persons. (5) Within the next 50 hours time-in-service after the effective date of this AD, modify the rear seat base in accordance with the instructions contained in Piper Aircraft Corporation Service Kit No. 764 3O3V, SEAT AFT BOTTOM MODIFICATION, dated October 29, 1981, and Piper Service Bulletin 631B, dated October 29, 1981. The repeat preflight checks of paragraph B)(3) may be discontinued after this modification. C) An equivalent method of compliance may be approved by Chief, Engineering and Manufacturing Branch, FAA, Southern Region, P.O. Box 20636, Atlanta, Georgia 30320. This amendment becomes effective on March 8, 1982, to all persons except those to whom it has already been made effective by priority letter from the FAA dated November 3, 1981, and is identified as AD 81-23-05. 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.
Related Airworthiness Directives
2024-14-03
final ruleAirworthiness Directives; Various Airplanes
Unsafe Condition: an un-commanded automatic pitch trim runaway when the autopilot was first engaged, which could result in un-commanded automatic pitch trim runaway and loss of control of the airplane.
2022-03-15
final ruleAirworthiness Directives; Various Airplanes
Unsafe Condition: The displayed fuel quantity can have an error as much as four gallons/fuel tank with the display indicating four gallons with an empty tank. In the context of this event, the end level effect is th...
2020-26-16
final ruleAirworthiness Directives; Piper Aircraft, Inc. Airplanes
Unsafe Condition: A fatigue crack in a visually inaccessible area of the lower main wing spar cap can cause wing separation.
2018-07-03
final ruleAirworthiness Directives; Piper Aircraft, Inc.
Unsafe Condition: The installation of fuel tank selector covers with the placement of the left and right fuel tank selector placards installed in reverse, which could result in fuel management error, fuel starvation...