AD 75-16-10

75-16-10 BEECH: Amendment 39-2296. Applies to 95-55, 95-A55, 95-B55, 95-B55A, 95-B55B, 95-C55, 95-C55A, D55, D55A, E55, E55A, 58, 58A, 56TC, A56TC, 95, B95, B95A, D95A and E95 (Serial Numbers listed below).

Compliance: Required as indicated on specific models and serial numbers unless previously accomplished.

To prevent failure of elevator trim tab systems, accomplish the following as specified:

A) On Beech Models 95-55, 95-A55, 95-B55 and 95-B55A, serials TC-1 through TC-1143 except TC-350; 95-B55B (T-42A), serials TF-1 through TF-65; 95, B95, B95A, D95A and E95, serials TD-2 through TD-721; 95-C55, 95-C55A, D55 and D55A, serial TC-350 and TE-1 through TE-617; 56TC, serials TG-1 through TG-69, within 25 hours time in service after the effective date of this AD, unless otherwise complied with, inspect the elevator trim tab control rod and identify configuration/part number (swaged taper ends or 5/16" OD straight tubes).

1) If P/N 96-520012-9 assemblies (5/16"OD straight tubes with rivets in forward end) are installed:

a) Ascertain whether "SI" is etched on a flat surface of the rod end fitting. If so, no further inspection is required. Part is to be replaced in accordance with following paragraphs of this AD.

b) If "SI" is not etched on rod end fitting, remove the assembly and radiographically inspect the tube for eccentric reaming in the vicinity of the forward end fitting. Take radiographs from three equidistant directions (120 degrees apart). Before further flight, replace any tube where wall thickness at any one point is twice or more the thickness at the opposite side of the tube in accordance with the following paragraphs of this AD.

2) Remove all other P/N tube assemblies with swaged taper ends and inspect for cracks, looseness of end fittings, bending, or other signs of unairworthiness. Prior to further flight, replace any assembly found defective in accordance with the following paragraphs of this AD.B) On Beech Models 95-55, 95-A55, 95-B55 and 95-B55A, serials TC-1 through TC-1072 except TC-350 and TC-1071; 95-B55B (T-42A), serials TF-1 through TF-65; 95-C55, 95-C55A, D55 and D55A, serials TC-350, TE-1 through TE-542 except TE-521, TE-525 and TE-528 through TE-538; 56TC, serials TG-1 through TG-62 except TG-42, TG-45, TG-50, TG- 51 and TG-55; 95, B95, B95A, D95A and E95, serials TD-2 through TD-714 except TD-707, within 100 hours time in service after February 26, 1975, (effective date of AD 75-05-03), remove the two AN470AD3 rivets installed in the rod ends of P/N 45-524565-3 and 45-524565-5 elevator trim tab actuators and replace with P/N 96-524032 shoulder pins and MS20435F3-8 or MS20613-3C8 rivets.

C) On Beech Models 95-55, 95-A55, 95-B55 and 95-B55A, serials TC-1 through TC-1143 except TC-350; 95-B55B (T-42A), serials TF-1 through TF-65; 95, B95, B95A, D95A and E95, serials TD-2 through TD-721, within the next 100 hours time in service after effective date of this AD, but not later than October 15, 1975, remove existing 5/16" diameter 45-526009 swaged, 96-526011 swaged, or 96-526012-9 5/16" OD elevator trim tab control rod tubes and install new 3/8" OD tube assemblies P/N 96-520013-1. On aircraft which have elevator tab assemblies, P/N 45-610005-120 and -121, installed, remove 5/16" OD elevator tube assembly P/N 96-520012-13, and install new P/N 96-520013-7 3/8" OD tube assembly; or, alternately install new elevator tab assemblies, P/N 45-610005-122 and -123.

D) On Beech Models 95-C55, 95-C55A, D55 and D55A, serials TC-350 and TE-1 through TE-617; 56TC, serials TG-1 through TG-69, within the next 100 hours time in service after the effective date of this AD, but not later than October 15, 1975, remove existing 5/16" diameter 45-526009 swaged, 96-526011 swaged, or 96-526012-9 5/16" OD elevator trim tab control rod tubes and install a new 3/8" OD tube assembly P/N 96-520013-1. On aircraft which have elevator tab assemblies, P/N 96-610006-65 and -66 installed, remove 5/16" OD elevator tube assembly, P/N 96-520012-13, and install new 3/8" OD P/N 96-520013-7 tube assembly; or, alternately install new elevator tab assemblies P/N 96-610006-69 and -70.

E) On Beech Models 95-B55 and 95-B55A, serials TC-1144 through TC-1379; D55, D55A, E55 and E55A, serials TE-618 through TE-837; 56TC and A56TC, serials TG-70 through TG-94, 58 and 58A, serials TH-1 through TH-120, within the next 100 hours time in service after the effective date of this AD, but not later than October 15, 1975, remove existing 96-526019 (basic) elevator trim tab tube assemblies having rod ends secured to the tube with 3/32 aluminum rivets and install new tube assembly, P/N 96-526021-9, having rod ends secured to the tube with 1/8" monel rivets or new elevator tab assemblies, P/N 96-610006-67 and -68. Alternately, replace four AN470AD3 rivets which attach the end fittings to the existing tube with four MS20615-3M or MS20613-3C rivets of appropriate length in accordance with Advisory Circular 43.13-1A.

F) On Beech Models 95-B55 and 95-B55A, serials TC-1380 through TC-1775; 95- B55B (T-42A), serials TF-66 through TF-70; E55 and E55A, serials TE838 through TE-1005, 58 and 58A, serials TH-121 through TH-533, within the next 100 hours time in service after the effective date of this AD, but not later than October 15, 1975, remove existing 96-526019-5 or - 13 elevator tab tube assemblies having rod ends secured to the tube with 3/32 aluminum rivets and install new tube assembly, P/N 96-526021-1, having rod ends secured to the tube with 1/8" monel rivets.

Alternately, replace the four AN470AD3 rivets which attach the end fitting to the existing rod with four MS20615-3M or MS20613-3C rivets of appropriate length in accordance with Advisory Circular 43.13-1A.

G) Any alternate method of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.

H) Make a log book entry when complying with this AD. This entry must include date of compliance and method of compliance identified by AD paragraph and parts installed, signature, and number of certified agency/individuals performing the work. Beech Service Instructions No. 0610-152, Rev. II or later revision covers this subject.

This AD supersedes Amendment 39-600 (AD 68-10-07) effective May 21, 1968 and Amendment 39-2097 (AD 75-05-03) effective February 26, 1975.

This amendment becomes effective August 6, 1975.