abs spar web investigation
DESCRIPTION
ABS Spar Web Investigation. Report to Wichita ACO/ FAA Small Airplane Directorate Wichita, Kansas July 23, 2009. 1. Mandatory Service Bulletins. MSB 2269 issued August 1989 Barons (except 58P and 58TC) Travel Airs MSB 2360 issued November 1990 Bonanzas H35 and later - PowerPoint PPT PresentationTRANSCRIPT
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ABS Spar Web ABS Spar Web InvestigationInvestigation
Report to Wichita ACO/
FAA Small Airplane Directorate
Wichita, Kansas
July 23, 2009
1ABS-ASF Proprietary Data 7/23/2009
Mandatory Service BulletinsMandatory Service Bulletins
• MSB 2269 issued August 1989– Barons (except 58P and 58TC)– Travel Airs
• MSB 2360 issued November 1990– Bonanzas H35 and later– All Model 33 Debonairs/Bonanzas – All Model 36 Bonanzas
• Required inspection and repairs
2ABS-ASF Proprietary Data 7/23/2009
Airworthiness Directives
• AD 90-08-14– Incorporates MSB 2269 (multiengine)
• AD 92-08-07– Incorporates MSB 2360 (singe engine)– One time inspection– Required reporting to Beech
• No record of any data
• AD 95-04-03 – Repetitive inspections– No reporting
3ABS-ASF Proprietary Data 7/23/2009
Current AD InspCurrent AD Inspectionection
• Initial inspection @1500TT
• No cracks: every 500 hours thereafter
• Small cracks: every 200 hours thereafter
5ABS-ASF Proprietary Data 7/23/2009
Survey Reported %
Model Responses Cracks Cracked Notes 35 (O/IO-
470) 328 1 0.3% Short body, <3300 MGW
35 (IO-520) 538 19 3.5% Short body, 3300 MGW or greater
33 (IO-470) 163 4 2.5% Short body, <3300 MGW
33 (IO-520) 182 8 4.4% Short body, 3300 MGW or greater
36 25 4 16.0% Long body, MGW 3600 lbs
A36 232 30 12.9% Long body, MGW 3600 lbs (3650 lbs 1984 and later)
A36TC 21 0 0.0% Long body, MGW 3600 lbs
B36TC 21 2 9.5% Long body, MGW 3850 lbs
Baron 55/56 218 34 15.6% Short body, twin-engine
Baron 58 41 14 34.1% Long body, twin engine
95 9 1 11.1% Short body, twin-engine
ABS Member Survey ABS Member Survey
7ABS-ASF Proprietary Data 7/23/2009
FAA No-Crack Policy
• The Old Policy– For cracks found in structural components some ADs
have allowed continued operational flight if the cracks are smaller than a certain size.
– Inspection requirements will be more stringent for known cracks.
• The New Policy– Continued operational flight with known cracks in
primary structural components should not be allowed.
– Small Airplane Directorate will adhere to this basic policy.
10ABS-ASF Proprietary Data 7/23/2009