| AD Number | 75-17-32 | Status | Active |
| Effective Date | August 14, 1975 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-2336 |
| 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 Corporation |
| Model(s) | 501-D13 501-D13A 501-D13D 501-D13E 501-D13H |
75-17-32 DETROIT DIESEL ALLISON: Amendment 39-2336. Applies to Detroit Diesel Allison Model 501-D13 series engines which incorporate P/N 6829072 second stage turbine wheels with the following serial numbers:
KK14208
KK14421
KK14443
KK14460
KK15456
KK15484
KK14210
KK14422
KK14445
KK14461
KK15457
KK15485
KK14211
KK14423
KK14446
KK14463
KK15471
KK15486
KK14403
KK14424
KK14447
KK14464
KK15472
KK15487
KK14405
KK14427
KK14448
KK14465
KK15473
KK15489
KK14406
KK14428
KK14449
KK14817
KK15474
KK15490
KK14407
KK14430
KK14450
KK14819
KK15475
KK15492
KK14408
KK14431
KK14451
KK14821
KK15476
KK15493
KK14409
KK14432
KK14452
KK14822
KK15477
KK15494
KK14413
KK14434
KK14453
KK14823
KK15478
KK15495
KK14414
KK14435
KK14454
KK14825
KK15479
KK15496
KK14416
KK14436
KK14455
KK15451
KK15480
KK15497
KK14417
KK14437
KK14456
KK15452
KK15481
KK15498
KK14418
KK14440
KK14457
KK15453
KK15483
KK15500KK14420
KK14442
KK14459
KK15454
Note: At time of overhaul, some wheels have R1, R2, R3, R4 or R5 added as a suffix to the wheel serial number. The suffix should be disregarded in determining the applicability of this airworthiness directive.
Compliance required as indicated.
I. Remove from service wheels which have not been inspected since installation as new wheels, according to the following schedule:
(a) Remove from service within 100 cycles from the effective date of this Airworthiness Directive, wheels with more than 6900 cycles.
(b) Remove from service prior to exceeding 7000 cycles, wheels with not more than 6900 cycles, on the effective date of this Airworthiness Directive.
II. Remove from service wheels which have been inspected by fluorescent penetrant method FP- 30A/ZL-30A at last inspection, according to the following schedule:
(a) Remove from service within 100 cycles from the effective date of this Airworthiness Directive, wheels with more than 3900 cycles since last inspection or more than 9400 total cycles, whichever occurs first.
(b) Remove from service prior to exceeding 4000 cycles since last inspection or 9500 total cycles, whichever occurs first, wheels with not more than 3900 cycles since last inspection or not more than 9400 total cycles on the effective date of this Airworthiness Directive.
Note: If the method of fluorescent penetrant inspection used at last inspection cannot be determined, it must be assumed that FP-30A/ZL-30A was not used.
III. Remove from service wheels which have been inspected by a fluorescent penetrant method other than FP-30A/ZL-30A at last inspection, according to the following schedule:
(a) Remove from service within 100 cycles from the effective date of this Airworthiness Directive, wheels with more than 2400 cycles since last inspection, or more than 9400 total cycles, whichever occurs first.
(b) Remove from service prior to exceeding2500 cycles since last inspection or 9500 total cycles, whichever occurs first, wheels with not more than 2400 cycles since last inspection or not more than 9400 total cycles on the effective date of this Airworthiness Directive.
IV. or the purposes of this airworthiness directive, a cycle is defined as one takeoff.
V. Detroit Diesel Allison Commercial Service Letter 501D13 CSL-234 pertains to this subject.
This amendment is effective August 14, 1975.