AD 72-20-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Deutschland Ltd & Co KG | Spey 555-15 | ROLLS ROYCE (1971) LTD Model 555-15 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Spey 555-15H | ROLLS ROYCE (1971) LTD Model 555-15 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Spey 555-15N | ROLLS ROYCE (1971) LTD Model 555-15 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Spey 555-15P | ROLLS ROYCE (1971) LTD Model 555-15 Series Engines |
Unsafe Condition
Fretting of fuel tubes P/N's EU.20154A and EU.67548A could cause leakage of fuel under pressure into the engine compartment.
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Required Actions
Inspect tubes P/N's EU.20154A and EU.67548A for fretting and loss of sectional thickness. If evidence of fretting is found, remove the tubes and either rework/reinstall per Rolls Royce Spey Service Bulletin Sp 73-A161 or replace with serviceable tubes of the same part number before further flight, except for flights under FAR 21.197.
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Compliance Time
Within the next 25 hours' time in service after the effective date of this AD, unless already accomplished within the last 975 hours' time in service prior to the effective date, and thereafter at intervals not to exceed 1,000 hours' time in service from the last inspection until Spey Modification 5046 is incorporated.
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Affected Aircraft
Rolls-Royce Deutschland Ltd & Co KG Spey 555-15, Spey 555-15H, Spey 555-15N, Spey 555-15P engines on which Spey Modification 5046 has not been incorporated.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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