AD 78-24-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Israel Aircraft Industries, Ltd. | 1121 | Airworthiness Directives; ISRAEL AIRCRAFT INDUSTRIES (IAI) Model 1121, 1121A, and 1121B Airplanes |
| aircraft | Israel Aircraft Industries, Ltd. | 1121A | Airworthiness Directives; ISRAEL AIRCRAFT INDUSTRIES (IAI) Model 1121, 1121A, and 1121B Airplanes |
| aircraft | Israel Aircraft Industries, Ltd. | 1121B | Airworthiness Directives; ISRAEL AIRCRAFT INDUSTRIES (IAI) Model 1121, 1121A, and 1121B Airplanes |
Unsafe Condition
Damage to flexible fuel lines and potential fire in the event of an uncontrolled Ni-Cad battery thermal runaway.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the flexible fuel line installation and after modification perform inspections and leak tests in accordance with Commodore Jet Service Bulletin No. CJ-16, dated May 31, 1977, or equivalent approved by the FAA.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 150 hours time in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Israel Aircraft Industries, Ltd. Model 1121, 1121A, and 1121B airplanes, Serial Numbers through 150 except 107 equipped with Ni-Cad battery overtemperature warning or combination overtemperature warning and indicator systems relying on a common single sensor per battery.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Flexible Fuel Line Installation
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_78-24-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-24-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; ISRAEL AIRCRAFT INDUSTRIES (IAI) Model 1121, 1121A, and 1121B Airplanes Subject: Flexible Fuel Line Installation Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/20/1978 Make: Israel Aircraft Industries, Ltd. Model: 1121 | 1121A | 1121B Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 78-24-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3351 AD NUMBER: 78-24-04 SUBJECT HEADING: Airworthiness Directives; ISRAEL AIRCRAFT INDUSTRIES (IAI) Model 1121, 1121A, and 1121B Airplanes ACTION: SUMMARY: DATES: Effective December 20, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-24-04 ISRAEL AIRCRAFT INDUSTRIES (IAI): Amendment 39-3351. Applies to Model 1121, 1121A, and 1121B airplanes, Serial Numbers through 150 except 107 and equipped with Ni-Cad battery overtemperature warning or combination overtemperature warning and indicator systems, which rely on a common single sensor per battery. Compliance required within the next 150 hours time in service after the effective date of this AD, unless already accomplished. To reduce the possibility of damage to the flexible fuel lines and potential fire in the event of an uncontrolled Ni-Cad battery thermal runaway, modify the flexible fuel line installation and after modification perform inspections and leak tests in accordance with Commodore Jet Service Bulletin No. CJ-16, dated May 31, 1977, or equivalent, approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region, c/o American Embassy, APO NY 09667. This amendment becomes effective December 20, 1978. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_78-24-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-24-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; ISRAEL AIRCRAFT INDUSTRIES (IAI) Model 1121, 1121A, and 1121B Airplanes Subject: Flexible Fuel Line Installation Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/20/1978 Make: Israel Aircraft Industries, Ltd. Model: 1121 | 1121A | 1121B Product Type: Aircraft Product Subtype: Large 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: 78-24-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3351 AD NUMBER: 78-24-04 SUBJECT HEADING: Airworthiness Directives; ISRAEL AIRCRAFT INDUSTRIES (IAI) Model 1121, 1121A, and 1121B Airplanes ACTION: SUMMARY: DATES: Effective December 20, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-24-04 ISRAEL AIRCRAFT INDUSTRIES (IAI): Amendment 39-3351. Applies to Model 1121, 1121A, and 1121B airplanes, Serial Numbers through 150 except 107 and equipped with Ni-Cad battery overtemperature warning or combination overtemperature warning and indicator systems, which rely on a common single sensor per battery. Compliance required within the next 150 hours time in service after the effective date of this AD, unless already accomplished. To reduce the possibility of damage to the flexible fuel lines and potential fire in the event of an uncontrolled Ni-Cad battery thermal runaway, modify the flexible fuel line installation and after modification perform inspections and leak tests in accordance with Commodore Jet Service Bulletin No. CJ-16, dated May 31, 1977, or equivalent, approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region, c/o American Embassy, APO NY 09667. This amendment becomes effective December 20, 1978. 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
2004-14-14
final ruleAirworthiness Directives; Israel Aircraft Industries, Ltd., Model 1121, 1121A, 1121B, 1123, 1124, and 1124A Series Airplanes
Unsafe Condition: Cracking of the skins of the rudder assembly, which could result in reduced structural capability of the rudder and reduced controllability of the airplane.
2003-11-07
final ruleAirworthiness Directives; Israel Aircraft Industries, Ltd. Model 1121, 1121A, 1121B, 1123, 1124, and 1124A Series Airplanes
Unsafe Condition: Rapid adiabatic compression within the oxygen line between the oxygen shutoff valve and the pressure regulator due to a shutoff valve that can be opened quickly, which could result in overheating o...
2000-23-13
final ruleAirworthiness Directives; Israel Aircraft Industries, Ltd., Model 1121, 1121A, 1121B, 1123, 1124, and 1124A Series Airplanes
Unsafe Condition: Incorrect installation of the tie rod through the dust shield and both jackscrew assemblies on the horizontal stabilizer trim actuator can lead to jamming or disconnection of the actuator, resultin...
98-20-35
final rule[Correction] Airworthiness Directives; Israel Aircraft Industries (IAI), Ltd., Model 1121, 1121A, 1121B, 1123, 1124, and 1124A Series Airplanes
Unsafe Condition: The unsafe condition involves potential failure of the horizontal stabilizer trim actuator's jackscrew integrity and excessive wear of the tie rod, which could lead to loss of pitch control.