| AD Number | 78-16-07 | Status | Active |
| Effective Date | August 21, 1978 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-3276 |
| Product Type | ["Engine"] | Product Subtype | Not specified |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Rolls-Royce Deutschland Ltd & Co KG |
| Model(s) | Spey 511-8 |
78-16-07 ROLLS-ROYCE, LTD: Amendment 39-3276. Applies to Model 511-8 engines which have high pressure fuel pumps with 1500 or more hours time in service, installed on, but not limited to, Grumman Gulfstream 1159 airplanes, that have high pressure fuel shutoff valves which are modified in accordance with Lucas Service Bulletin Sp 73-158 and the associated engine high pressure fuel pump is not modified to Lucas Service Bulletin Sp 73-127 or Lucas Service Bulletin Sp 73-212.
Compliance is required as indicated, unless already accomplished.
To prevent inflight engine flameouts, accomplish the following:
1. Within 25 hours time in service after the effective date of this AD, unless accomplished in the last 50 hours time in service, inspect the primary inlet strainer of the high pressure fuel shutoff valve for the accumulation of debris in accordance with Rolls-Royce Spey engine Service Bulletin Sp 73-182, Revision 1, dated December 1977, or FAA-approved equivalent, as follows:
(a) If no metallic debris is found:
(i) Clean the strainer, and
(ii) Return the strainer to service.
(b) If debris is found which contains hard bronze particles:
(i) Remove the high pressure fuel pump, and
(ii) Install a pump found to be serviceable in accordance with Lucas Overhaul Manual, Chapter 73, or an FAA-approved equivalent.
(c) If debris is found which contains light silver metallic material:
(i) Clean and reinstall the strainer, and
(ii) Inspect the low pressure governor main inlet strainer in accordance with Rolls-Royce Spey engine Maintenance Manual, Chapter 73-20-21, or an FAA-approved equivalent.
(d) If debris is found in the low pressure governor main inlet screen which contains hard bronze particles, install a replacement high pressure fuel pump in accordance with paragraph 1(b)(ii) of this AD.
(e) If debris is found in the low pressure governor main inlet screen which contains light silver metallic material:
(i) Clean the strainer and reinstall, and
(ii) Install a replacement high pressure fuel pump in accordance with paragraph 1(b)(ii) of this AD, or
(iii) Return to service for a maximum of 10 hours time in service, provided the opposite engine is not being operated under the same restriction, and before additional time in service, install a replacement high pressure fuel pump in accordance with paragraph 1(b)(ii) of this AD.
2. Repeat the inspection specified in paragraph 1 of this AD at 50 hour intervals until the installation required by paragraph 3 of this AD is accomplished.
3. Within 2,000 hours high pressure fuel pump time in service after the effective date of this AD, unless already accomplished, install a high pressure fuel pump which has been modified in accordance with Lucas Service Bulletin Sp 73-127 or Lucas Service Bulletin Sp 73-212, or an FAA-approved equivalent.
4. Equivalent methods of compliance with this AD or adjustment of the inspection intervals required by this AD may be approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa, and Middle East Region, c/o American Embassy, APO New York 09667, if the request is submitted through an FAA Maintenance Inspector and contains substantiating data to justify the interval or method of compliance for that operator.
5. In accordance with the provisions of FAR 21.197 and FAR 21.199, the aircraft may be flown to a base where the inspections or modifications required by this AD may be accomplished.
This amendment becomes effective August 21, 1978.