AD 98-17-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-300 Series | Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-400 Series | Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-400D Series | Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes |
| aircraft | The Boeing Company | 747-400F Series | Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes |
Unsafe Condition
Failure of the engine fire detection system to annunciate a fire warning message to the flight crew following a severe engine failure, which could lead to delayed or improper flight crew response to the engine failure.
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Required Actions
Modify the engine fire detection system by extending the fire detectors for 360-degree protection around the combustor, removing the grounded protective shield from the fire detector wiring, re-routing the wire bundles away from the burn-through region, and replacing the element connectors with terminal lug screw connections as specified in Boeing Alert Service Bulletins 747-26A2250 and 767-26A0103.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
at the next shop visit of an engine or combustor module, but no later than 5 years after the effective date of the AD
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Affected Aircraft
Boeing Model 747 and 767 series airplanes equipped with Rolls-Royce Model RB211-524G/H engines.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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