AD 77-15-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Israel Aircraft Industries, Ltd. | 1123 | Airworthiness Directives; ISRAEL AIRCRAFT INDUSTRIES (IAI) Model 1123 Airplanes |
Unsafe Condition
Rupture of the hydraulic pressure line between the hydraulic pump and the firewall
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove and discard hose P/N 6723087-43, remove and discard brackets P/N 5723548-3 and -5 for specified serial numbers, reinstall AN837-6 elbow with washer P/N 5723548-7, and install hose P/N 6723087-57 with a minimum 5.0-inch bend radius.
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Compliance Time
within the next 150 hours time in service after the effective date of this AD
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Affected Aircraft
Israel Aircraft Industries, Model 1123 airplanes, serial numbers 107, 151, 152, 153, 155 through 180, and 182 through 186, except those previously modified per IAI Service Bulletin No. WW-7A
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Hydraulic Pressure Line
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_77-15-17.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-15-17 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; ISRAEL AIRCRAFT INDUSTRIES (IAI) Model 1123 Airplanes Subject: Hydraulic Pressure Line Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/29/1977 Make: Israel Aircraft Industries, Ltd. Model: 1123 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 77-15-17 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2990 AD NUMBER: 77-15-17 SUBJECT HEADING: Airworthiness Directives; ISRAEL AIRCRAFT INDUSTRIES (IAI) Model 1123 Airplanes ACTION: SUMMARY: DATES: Effective August 29, 1977. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-15-17 ISRAEL AIRCRAFT INDUSTRIES (IAI): Amendment 39-2990. Applies to Model 1123 airplanes, S/N's 107, 151, 152, 153, 155 through 180, and 182 through 186, certificated in all categories, except those previously modified in accordance with IAI Service Bulletin No. WW-7A. Compliance is required within the next 150 hours time in service after the effective date of this AD, unless already accomplished. To prevent possible rupture of the hydraulic pressure line between the hydraulic pump and the firewall, accomplish the following: (a) Remove and discard hose P/N 6723087-43 attached between the hydraulic pump pressure port and the AN837-6 elbow installed on pylon. (b) For airplanes S/N's 175 through 180 and 182 through 186, remove and discard brackets P/N's 5723548-3 and -5. (c) Remove the AN837-6 elbow from pylon, and reinstall with washer P/N 5723548- 7 on engine side of firewall. (d) Install hose P/N 6723087-57 between hydraulic pump pressure port and AN837- 6 elbow, with 45-degree fitting of hose attached to elbow on pylon. (NOTE: Position the elbow on pylon to allow hose to be as straight as possible. Bend radius of hose may not be less than 5.0 inches.) This amendment becomes effective August 29, 1977. FOOTER:
Document Text
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AD Final Rules - DRS_77-15-17.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-15-17 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; ISRAEL AIRCRAFT INDUSTRIES (IAI) Model 1123 Airplanes Subject: Hydraulic Pressure Line Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/29/1977 Make: Israel Aircraft Industries, Ltd. Model: 1123 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: 77-15-17 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2990 AD NUMBER: 77-15-17 SUBJECT HEADING: Airworthiness Directives; ISRAEL AIRCRAFT INDUSTRIES (IAI) Model 1123 Airplanes ACTION: SUMMARY: DATES: Effective August 29, 1977. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-15-17 ISRAEL AIRCRAFT INDUSTRIES (IAI): Amendment 39-2990. Applies to Model 1123 airplanes, S/N's 107, 151, 152, 153, 155 through 180, and 182 through 186, certificated in all categories, except those previously modified in accordance with IAI Service Bulletin No. WW-7A. Compliance is required within the next 150 hours time in service after the effective date of this AD, unless already accomplished. To prevent possible rupture of the hydraulic pressure line between the hydraulic pump and the firewall, accomplish the following: (a) Remove and discard hose P/N 6723087-43 attached between the hydraulic pump pressure port and the AN837-6 elbow installed on pylon. (b) For airplanes S/N's 175 through 180 and 182 through 186, remove and discard brackets P/N's 5723548-3 and -5. (c) Remove the AN837-6 elbow from pylon, and reinstall with washer P/N 5723548- 7 on engine side of firewall. (d) Install hose P/N 6723087-57 between hydraulic pump pressure port and AN837- 6 elbow, with 45-degree fitting of hose attached to elbow on pylon. (NOTE: Position the elbow on pylon to allow hose to be as straight as possible. Bend radius of hose may not be less than 5.0 inches.) This amendment becomes effective August 29, 1977. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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