The bulletin
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REVISED
SPECIAL
AIRWORTHINESS
INFORMATION
BULLETIN
REGULATORY SUPPORT DIVISION P.O. BOX 26460 OKLAHOMA CITY, OKLAHOMA 73125-0460
U.S. Department of Transportation Federal Aviation Administration
No. CE-00-20R1 June 22, 2000
SAIB’s are posted on the internet at http://av-info.faa.gov This is issued for informational purposes only and any recommendation for corrective action is not mandatory.
Introduction:
The purpose of this Revised Special Airworthiness Information Bulletin (SAIB) is to inform owners and/or operators of certain Raytheon (Beech ) Barons, Bonanzas, and Travel Airs models of minor typographical errors marked below. All other applicability and information remains the same. The applicability and model serial numbers were also listed in Airworthiness Directive (AD) 71-24-10.
Models Serial Numbers 35-C33, E33, F33 CD-1062 through CD-1254, except CD-1237 35-C33A, E33A, F33A CE-118 through CE-346, except CE-324 E33C and F33C CJ-1 through CJ-30 V35, V35TC, V35A, V35A-TC, V35B, V35B-TC D-8336 through D-9285, except D-9208, -9279, -9280, -9281, -9282 36, A36 E-1 through E-275 95-B55, 95-B55A TC-1021 through TC-1397, except TC-1395, -1396 95-C55, D55, E55 TE-256 through TE-845, except TE-836, 837 56TC, A56TC TG-1 through TG-94 58 TH-1 through TH-170 except TH-135, -153 -161 D95A, E95 TD-678 through TD-721
Only applicable if altered in service to in corporate P/N 60-524080 series control wheels, which have provisions for a clock and light:
35-C33 CD-814 through CD-1061 35-C33A CE-1 through CE-117 V35 D-7977 through D-8335 95-B55, 95-B55A TC-371 and TC-502 through TC-1020 95-C55, 95-C55A TC-350 and TE-1through TE-255 D95A TD-534 through TD-677
Recently, there was a control wheel separation fr om the control column of a Raytheon (Beech) Baron Model 56-TC during a flight in turbulent w eather. The pilot mainta ined the roll control by using the autopilot and made an emergency landing. An investigation of the incident revealed that the weld, which was holding the shaft and the flange of the control column failed.
2 CE-00-20R1 As a result, the Spokane, WA Flight Standard s District Office (FS DO) processed Safety Recommendation 99.336 suggesting a mandatory inspection of all the Barons, Bonanzas, and Travel Airs according to AD 71-24-10 and replacement of old parts with redesigned parts.
Background:
FAA issued AD 71-24-10 in 1971, which required in spection of the control wheel adapter by looking for two Beech inspection ink stamps that could be seen on one tip of each control wheel adapter. If two inspection stamps could not found, the AD required that this part be replaced with either Beech P/N 96-524029-15 (short) or Beech P/N 96-524029-19 (long) control wheel adapter, which had two welds, or with Beech P/N 96-524029-31 (short) or P/N 96-524029-33 (long), which had an improved design for higher weld strength.
Recommendations:
For the above incident, the logbook of the airpla ne indicates that AD 71-24-10 was complied with in February 1972. However, the inspection of the fa iled part indicates that it does not comply with the requirements of the AD. One possibility is that, after complying with the AD, this part may have been replaced with a non-compliant part during a repair or maintenance at a later time.
Since failure of this control wheel adapter during flight may have undesirable safety consequences, the FAA strongly recommends inspection of the control wheel adapter within 100 hours of Time-In-Service (TIS) or at the next annual in spection, whichever occurs first, looking for two ’B’ inspection stamps. If this part is painte d and can not be inspected for the two ink stamps, the FAA recommends the part be considered non-compliant and be replaced as directed in AD 71-24-10 or Beechcraft Service Instructions N o. 0254-156. If any spares for this part are available, they should be inspected and di spositioned as mandated in AD 71-24-10. Any one requiring a copy of the Service Instructions N o. 0254-156, contact Raytheon Aircraft Company at 1 (800) 429-5372 or at (316) 676-3140.
For Further Information Contact:
Federal Aviation Administration, Wichita Aircra ft Certification Office, T. N. Baktha, Aerospace Engineer, Airframe, 1801 Airport Road, Room 100, Wichita, Kansas, 67209, telephone: (316) 946-4155; fax: (316) 946-4407; e-mail: t.n.baktha@faa.gov