85-22-06 R1 FAIRCHILD AIRCRAFT CORPORATION (formerly Swearingen Aviation Corporation): Amendment 39-5158 as revised by Amendment 39-6675. Docket No. 85-CE-11- AD.
Applicability: Models SA226-T (Serial Numbers (S/N) T201 thru T275, T277 thru T291); SA226-AT (S/N AT001 thru AT419, AT003E, AT038E, AT062E, AT064E); SA226-TC (S/N TC201 thru TC419, TC208E, TC211E, TC211EE, TC211EEE, TC211EEEE, TC222E, TC227E, TC228E, TC229E, TC234E, TC237E, TC238E, TC239E, TC331E, TC334E;) SA226- T(B) (S/N T(B)276, T(B)292 thru T(B)417, T(B)303E); SA227-AC (S/N AC406, AC415, AC416, AC420 thru AC601, AC603); SA227-TT (S/N TT421 thru TT535, TT537 thru TT541); SA227-AT (S/N AT423 thru AT526, AT528, AT530 thru AT535, AT537 thru AT585) airplanes certificated in any category.
Compliance: Required within the next 100 hours time-in-service after the effective date of this AD unless previously accomplished in accordance with AD 85-22-06, Amendment 39-5158, and thereafter as indicated below, at thenext scheduled interval. To assure proper operation of the Stall Avoidance System (SAS), accomplish the following:
(a) Except as noted in paragraph (b) of this AD, modify and/or inspect the applicable airplanes in accordance with the manufacturer's service bulletins, at the initial and repetitive time- in-service intervals, as specified for the model and serial numbered airplanes, set forth in Table 1 below:
Table 1
When performing a functional check of the SAS Servo (Bendix only) allow the servo to run for a minimum of 5 minutes prior to accomplishing the functional check. If the temperature is below 0oC, allow the servo (Bendix only) to run for a minimum of 10 minutes prior to accomplishing the functional check.
Model
Serial Number
Fairchild Service
Bulletin
Compliance Interval
Hrs-Time in Service
SA226-T
T201 thru T275
226-A27-024
one time only
T277 thru T291
226-A27-028
one time only
226-27-038
Para. 2.A
200
Para. 2.B
500
Para. 2.C.
500
Para. 2.D.
800
SA226-AT
AT001 thru AT073,
226-A27-024
one time only
AT003E, AT038E,
AT062E, AT064E
226-27-038
Para. 2.A
200
Para. 2.B
500
Para. 2.C.
500
Para. 2.D.
800
AT074 thru AT419
226-27-038
Para. 2.A
200
Para. 2.B
500
Para. 2.C.
500
Para. 2.D.
800
SA226-TC
TC201 thru TC314,
226-A27-024
one time only
TC208E, TC211E,
TC211EE, TC211EEE,
226-27-038
TC211EEEE, TC222E
Para. 2.A
200
TC227E, TC228E
Para. 2.B
500
TC229E, TC234E,
Para. 2.C.
500
TC237E, TC238E
Para. 2.D.
800
TC239E
TC315 thru TC419
226-27-038
TC331E, TC334E
Para. 2.A
200
Para. 2.B
500
Para. 2.C.
500
Para. 2.D.
800
SA226-T(B)
T(B)276,
226-A27-028
one time only
T(B)292 thru
226-A27-033
one time only
T(B)391
226-27-037
Para. 2.A
200
Para. 2.B
500
Para. 2.C.
2000
T(B)392 thru
226-27-033
one time only
T(B)417,
226-27-037
T(B)303E
Para. 2.A
200
Para. 2.B
500
Para. 2.C.
2000
SA227-AC
AC420 thru AC551
227-A27-004
one time only
227-27-006
Para. 2.A
200
Para. 2.B
500
Para. 2.C.
2000
AC406, AC415,
227-27-006
AC416, AC552 thru
Para. 2.A
200
AC601, AC603
Para. 2.B
500
Para. 2.C.
2000
SA227-TT
TT421, thru TT526,
227-A27-004
one time only
TT528, TT530 thru
227-27-006
TT535
Para. 2.A
200
Para. 2.B
500
Para. 2.C.
2000
TT527, TT529,
227-27-004
one time only
TT536 thru TT541
SA227-AT
AT423 thru AT526
227-A27-004
one time only
AT528, AT530 thru
227-27-006
AT535, AT537 thru
Para. 2.A
200
AT549
Para. 2.B
500
Para. 2.C.
2000
AT550 thru AT585
227-27-006Para. 2.A
200
Para. 2.B
500
Para. 2.C.
2000
(b) Modify and/or inspect those Model SA226 and SA227 series airplanes which are equipped with the Conrac SAS system (per STC SA4725SW) in accordance with Table 2 as follows:
Table 2
When performing a functional check of the SAS Servo (Bendix only) allow the servo to run for a minimum of 5 minutes prior to accomplishing the functional check. If the temperature is below 0oC, allow the servo (Bendix only) to run for a minimum of 10 minutes prior to accomplishing the functional check.
Model
Serial Number
Fairchild Service
Bulletin
Compliance
Interval Hrs-Time in Service
226-27-037
Para. 2.A
200
Para. 2.B
500
Any applicable Model SA226
and SA227 airplanes
incorporating STC SA4725SW
Para. 2.C
2000
NOTE 1: The current issue date and subject matter of the Service Bulletins specified in Table 1 are as follows:
(1) 226-A27-024 - "Flight controls - Elevator," dated 11/13/79.
(2) 226-A27-028 - "Flight controls - Rudder and Elevator," dated 12/11/80.
(3) 226-A27-033 - "Flight controls - Elevator," dated 12/3/82, revised 1/6/83.
(4) 227-A27-004 - "Flight controls - Elevators," dated 12/3/82, revised 1/6/83.
(5) 226-27-037 - "Conrac SAS System - Inspection and Recalibration," dated 2/15/85, revised 4/15/88.
(6) 226-27-038 - "Rosemount SAS System - Inspection and Recalibration," dated 2/15/85, revised 1/16/90.
(7) 227-27-006 - "Conrac SAS System - Inspection and Recalibrations," dated 2/15/85, revised 4/15/88.
(c) If the inspections specified in paragraphs (a) and (b) of this AD necessitate replacement of the servo pusher, assure that the replacement unit is either new, overhauled, or meets the limits of the electrical test specified in the above revised service bulletins.
(d) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished.
(e) An alternate method of compliance or adjustment of the initial or repetitive compliance times which provides an equivalent level of safety may be approved by the Manager, Airplane Certification Office, Fort Worth, Texas 76193-0150; Telephone (817) 624-5150.
NOTE 2: The request should be forwarded through an FAA Maintenance Inspector, who may add comments and then send it to the Manager, Airplane Certification Office, Fort Worth, Texas.
All persons affected by this directive may obtain copies of the documents referred to herein upon request to the Fairchild Aircraft Corporation, P.O. Box 790490, San Antonio, Texas 78279- 0490; or may examine these documents at the FAA, Central Region, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106.
Airworthiness Directive 85-22-06 R1 revises AD 85-22-06, Amendment 39-5158.
This amendment (39-6675, AD 85-22-06 R1) becomes effective on October 19, 1990.