| AD Number | 70-02-02 | Status | Active |
| Effective Date | April 15, 1970 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-969 |
| Product Type | ["Engine"] | Product Subtype | Not specified |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Pratt & Whitney Division |
| Model(s) | JT8D-1 JT8D-11 JT8D-15 JT8D-15A JT8D-17 JT8D-17A JT8D-17AR JT8D-17R JT8D-1A JT8D-1B JT8D-209 JT8D-217 JT8D-217A JT8D-217C JT8D-219 JT8D-5 JT8D-7 JT8D-7A JT8D-7B JT8D-9 JT8D-9A |
70-02-02 PRATT & WHITNEY: Amdt. 39-922 as amended by Amendment 39-969. Applies to all JT8D series turbofan engines which incorporate the following serial number sixth stage compressor rotor disc:
1V5825
1V5969
1V6073
1V6371
1V5826
1V5970
1V6083
1V6375
1V5828
1V5976
1V6093
1V6394
1V5831
1V5977
1V6094
1V6398
1V6096
1V5980
1V5832
1V5833
1V5981
1V6097
1V6663
1V5835
1V5982
1V5851
1V5987
1V6101
2T8050
1V5857
1V5992
1V6103
1V5859
1V6106
7S6324
1V5860
1V6000
1V6112
1V5862
1V6003
1V6113
7S6409
1V5863
1V6005
1V6115
7S6449
1V5864
1V6006
1V6117
1V5871
1V6007
1V6132
8T7257
1V5875
1V6008
1V6148
1V5878
1V6010
1V6151
8T7335
1V5882
1V6013
1V6152
1V5885
1V6016
1V6158
8T7450
V5890
1V6020
1V6162
8T7462
1V5896
1V6022
1V6164
8T7470
1V6027
1V6171
8T7474
1V5904
1V6028
1V6172
8T7487
1V591
1V6031
1V6175
8T7489
1V5916
1V6032
1V6182
8T7490
1V59201V6034
1V6194
8T7491
1V5923
1V6036
1V5935
1V6043
1V6209
8T7513
1V5938
1V6046
1V6222
8T7517
1V5943
1V6047
1V6240
8T7520
1V5945
1V6050
1V6247
8T7524
1V5948
1V6054
1V6251
8T7544
1V5952
1V6056
1V6260
8T7552
1V5954
1V6057
1V6273
8T7562
1V5956
1V6058
1V6274
8T7569
1V5957
8T7567
1V6068
1V5964
1V6072
1V6350
8T7570
8T7572
8T7636
8T7681
8T7695
8T7588
8T7638
8T7686
8T7696
8T7589
8T7655
8T7688
8T7699
8T7597
8T7657
8T7689
8T7669
8T7690
8T7704
8T7621
8T7679
8T7692
8T7708
Compliance required as indicated.
To preclude sixth stage compressor rotor disc failures as the result of abnormal processing of the edge radius in the base of the blade slots, accomplish the following:
a. For engines incorporating any of the previously listed sixth stage compressor rotor discs:
1. With 1700 hours' or more in service since new within the next 600 hours in service after the effective date ofthis AD replace the suspect sixth stage compressor rotor disc with a new, used or reworked disc, approved by Chief, Engineering & Manufacturing Branch, Eastern Region, New York.
2. With 1700 hours' or less in service since new prior to the accumulation of 2300 hours' in service replace the suspect sixth stage compressor rotor disc with a new, used or reworked disc approved by Chief, Engineering & Manufacturing Branch, Eastern Region, New York.
b. Upon submission of substantiating data by an owner or operator through an FAA Maintenance Inspector, the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region may adjust the compliance time.
Amendment 39-922 effective February 16, 1970.
This amendment (39-969) is effective April 15, 1970.