86-24-03 R1 PIONEER PARACHUTE COMPANY: Amendment 39-5565. Applies to Model K-XX, K-XXII and 26 foot conical canopies with the following serial numbers:
K-XX, P/N 5375-1
Color Patterns: Light Blue Upper Panels and Royal Blue Lower Panels or Yellow Upper Panels and Tan Lower Panels
598162
598927
598966
599000
599043
598318
598928
598967
599001
599048
598865
598929
598968
599004
599049
598866
598930
598969
599005
599050
598923
598937
598970
599006
599051
598924
598960
598971
599008
599087
598925
598961
598972
599009
599165
598926
598965
598995
599042
599166
Color Patterns: Light Blue Upper Panels and Tan Lower Panels or Yellow Upper Panels and Tan Lower Panels
598307
598345
598364
598526
598535
598317
598346
598366
598527
598536
598320
598347
598367
598528
598537
598340
598348
598521
598529
598545
598341
598349
598522
598530
598571
598342
598350
598523
598531
598572
598343
598351
598524
598532
598592
598344
598363
598525
598533
598863
Color Pattern: White Panels
598539
598550
598843
598998
599563
598540
598552
598844
598999
599613
598541
598553
598845
599002
599614
598542
598554
598858
599003
599640
598546
598555
598864
599007
599701
598547
598556
598962
599164
599702
598548
598579
598996
599561
599703
598549
598842
598997
599562
599711
K-XXII, P/N 5418-1
598557
598561
598565
598569
599076
598558
598562
598566
598650
599441
598559
598563
598567
598651
599638
598560
598564
598568
599044
599639
26 foot conical, P/N 2412-501
Color Pattern: All White
599093
To prevent use of affected canopies as FAA approved canopies, due to understrength material, remove or obliterate TSO-C23b marking prior to next use after receipt of this AD, unless already accomplished.
NOTES: (1) Pioneer Parachute Company Safety Notice, dated December 22, 1986, applies to this AD.
(2) Investigation is continuing, and this AD may be amended in light of the results of the investigation.
Upon request, an equivalent means of compliance with the requirements of this AD may be approved by the Manager, Boston Aircraft Certification Office, Aircraft Certification Division, Federal Aviation Administration, 12 New England Executive Park, Burlington, Massachusetts 01803, telephone (617) 273-7103.
This amendment becomes effective March 20, 1987, as to all persons except those persons to whom it was made immediately effective by Priority Letter AD No. 86-24-03, issued November 21, 1986, and Priority Letter AD No. 86-24-03R1, issued January 13, 1987, which contained this amendment.