AD 73-14-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Commander Aircraft Corporation | 112 | Airworthiness Directives; Rockwell Commander Model 112 Airplanes |
Unsafe Condition
Cracks in the prop spinner bulkhead flange, radius between flange and web, or rear bulkhead and doublers near spinner dome attachments.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove the spinner dome, visually inspect front and rear bulkheads for cracks, replace defective parts with new or serviceable parts, reassemble spinner dome with fiber washers and torque screws to 20-25 in.lbs, and record compliance in Aircraft Log Book.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 10 hours time in service after the effective date of this AD and every 10 hours time in service thereafter
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rockwell Commander Model 112 airplanes Serial Number 3 and up equipped with Hartzell propeller spinner C-3533 or C-3533P
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Cracks in Prop Spinner Bulkhead
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_73-14-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 73-14-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Rockwell Commander Model 112 Airplanes Subject: Cracks in Prop Spinner Bulkhead Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/26/1973 Make: Commander Aircraft Corporation Model: 112 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 73-14-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1670 AD NUMBER: 73-14-06 SUBJECT HEADING: Airworthiness Directives; Rockwell Commander Model 112 Airplanes ACTION: SUMMARY: DATES: Effective June 26, 1973. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 73-14-06 ROCKWELL COMMANDER: Amdt. 39-1670. Applies to Model 112 airplanes Serial Number 3 and up certificated in all categories equipped with Hartzell propeller spinner C-3533 or C-3533P. Compliance is required within the next 10 hours time in service after the effective date of this AD and every 10 hours time in service thereafter. Accomplish the following: (1) Remove the spinner dome. (2) Visually inspect front bulkhead inside spinner dome for cracks or fractures in the flange or in radius between flange and web. (3) Visually inspect rear bulkhead and doublers for cracks in the vicinity of the spinner dome attachments, and attachment of the rear bulkhead to propeller hub. (4) Replace defective, cracked, or broken parts with new or serviceable parts. (5) Reassemble spinner dome to rear bulkhead. Insure that fiber washers are fitted under the attaching screw heads. Torque screws to 20 - 25 in.lbs. (6) Record compliance with this airworthiness directive in Aircraft Log Book. Rockwell International, Albany Aircraft Division, Service Bulletin, SB-112-4 relates to this same subject. This amendment is effective June 26, 1973, and was effective upon receipt for all recipients of the air mail letter dated June 6, 1973, which contained this amendment. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_73-14-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 73-14-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Rockwell Commander Model 112 Airplanes Subject: Cracks in Prop Spinner Bulkhead Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/26/1973 Make: Commander Aircraft Corporation Model: 112 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 73-14-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1670 AD NUMBER: 73-14-06 SUBJECT HEADING: Airworthiness Directives; Rockwell Commander Model 112 Airplanes ACTION: SUMMARY: DATES: Effective June 26, 1973. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 73-14-06 ROCKWELL COMMANDER: Amdt. 39-1670. Applies to Model 112 airplanes Serial Number 3 and up certificated in all categories equipped with Hartzell propeller spinner C-3533 or C-3533P. Compliance is required within the next 10 hours time in service after the effective date of this AD and every 10 hours time in service thereafter. Accomplish the following: (1) Remove the spinner dome. (2) Visually inspect front bulkhead inside spinner dome for cracks or fractures in the flange or in radius between flange and web. (3) Visually inspect rear bulkhead and doublers for cracks in the vicinity of the spinner dome attachments, and attachment of the rear bulkhead to propeller hub. (4) Replace defective, cracked, or broken parts with new or serviceable parts. (5) Reassemble spinner dome to rear bulkhead. Insure that fiber washers are fitted under the attaching screw heads. Torque screws to 20 - 25 in.lbs. (6) Record compliance with this airworthiness directive in Aircraft Log Book. Rockwell International, Albany Aircraft Division, Service Bulletin, SB-112-4 relates to this same subject. This amendment is effective June 26, 1973, and was effective upon receipt for all recipients of the air mail letter dated June 6, 1973, which contained this amendment. 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.
2023-09-09 Recurring
final ruleAirworthiness Directives; Various Airplanes, Helicopters, and Engines
Unsafe Condition: Multiple failures of spot-welded, multi-segment v-band couplings at the tailpipe to the turbocharger exhaust housing flange.
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...
2012-02-10 Recurring
final ruleAirworthiness Directives; CPAC, Inc. Airplanes
Unsafe Condition: Cracks in the elevator spar, which could lead to structural failure of the elevator spar.
