AD 78-16-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 336 | Airworthiness Directives; CESSNA Model 336 Airplanes. |
Unsafe Condition
Incorrect weight and balance data may result in an unacceptable center of gravity, leading to loss of aircraft control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the Cessna weight and balance data by altering center of gravity moment envelope and limits chart, install a caution placard on the baggage compartment door, and operate the aircraft in accordance with the new limitations.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 100 hours time-in-service after the effective date of this AD
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Affected Aircraft
Cessna Model 336 airplanes
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Weight And Balance Data
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_78-16-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-16-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Model 336 Airplanes. Subject: Weight And Balance Data Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/14/1978 Make: Cessna Aircraft Company Model: 336 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 78-16-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3273 AD NUMBER: 78-16-04 SUBJECT HEADING: Airworthiness Directives; CESSNA Model 336 Airplanes. ACTION: SUMMARY: DATES: Effective October 14, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-16-04 CESSNA: Amendment 39-3273. Applies to Model 336 airplanes. Compliance: Required as indicted, unless already accomplished. To provide loading instructions which will limit aircraft loading to an acceptable center of gravity, within the next 100 hours time-in-service after the effective date of this AD, accomplish the following: A) Modify the Cessna weight and balance data included in the Model 336 airplane as follows: 1. Modify the center of gravity moment envelope on Page 1 by drawing a straight line between the two points (3900 pounds - 548,730 pounds-inches and 2500 pounds - 351,751 pounds-inches) and cover or obliterate the lines establishing the right side of the existing center of gravity moment envelope. 2. Modify the normal category center of gravity limits chart on Page 2 by drawing a vertical line at the 140.7 inches aft of datum point from the 2500 to 3900 pounds lines and cover or obliterate the lines establishing the right side of the existing normal category center of gravity limits envelope. B) Below the existing capacity placard located on the baggage compartment door install a permanent placard which reads as follows: "CAUTION - AFT CENTER OF GRAVITY LIMITATION MAY RESTRICT LOADING OF THIS COMPARTMENT TO LESS THAN 365 POUNDS" and operate the aircraft in accordance with this limitation. This placard should be fabricated of .032 inch minimum thickness aluminum or plastic material with minimum 3/16-inch high stamped or engraved letters and installed using threaded or rivet type fasteners. C) Any equivalent method of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. This amendment becomes effective October 14, 1978. FOOTER:
Document Text
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AD Final Rules - DRS_78-16-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-16-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Model 336 Airplanes. Subject: Weight And Balance Data Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/14/1978 Make: Cessna Aircraft Company Model: 336 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: 78-16-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3273 AD NUMBER: 78-16-04 SUBJECT HEADING: Airworthiness Directives; CESSNA Model 336 Airplanes. ACTION: SUMMARY: DATES: Effective October 14, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-16-04 CESSNA: Amendment 39-3273. Applies to Model 336 airplanes. Compliance: Required as indicted, unless already accomplished. To provide loading instructions which will limit aircraft loading to an acceptable center of gravity, within the next 100 hours time-in-service after the effective date of this AD, accomplish the following: A) Modify the Cessna weight and balance data included in the Model 336 airplane as follows: 1. Modify the center of gravity moment envelope on Page 1 by drawing a straight line between the two points (3900 pounds - 548,730 pounds-inches and 2500 pounds - 351,751 pounds-inches) and cover or obliterate the lines establishing the right side of the existing center of gravity moment envelope. 2. Modify the normal category center of gravity limits chart on Page 2 by drawing a vertical line at the 140.7 inches aft of datum point from the 2500 to 3900 pounds lines and cover or obliterate the lines establishing the right side of the existing normal category center of gravity limits envelope. B) Below the existing capacity placard located on the baggage compartment door install a permanent placard which reads as follows: "CAUTION - AFT CENTER OF GRAVITY LIMITATION MAY RESTRICT LOADING OF THIS COMPARTMENT TO LESS THAN 365 POUNDS" and operate the aircraft in accordance with this limitation. This placard should be fabricated of .032 inch minimum thickness aluminum or plastic material with minimum 3/16-inch high stamped or engraved letters and installed using threaded or rivet type fasteners. C) Any equivalent method of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. This amendment becomes effective October 14, 1978. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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