AD 56-01-01

Airworthiness directive · Ventral Fin Support · Scotts-Bell 47 47G and 47G-2

Models
47G, 47G-2
Data sheet
TCDSH-1
Registered aircraft
152 matched by model
Product
Aircraft · Rotorcraft

Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.

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The airworthiness directive

56-01-01 BELL: Applies to Model 47G, Serial Numbers 666 Through 1411 and Model 47G2, Serial Numbers 1342 Through 1412.

Compliance required as soon as possible, but not later than January 31, 1956.

Ventral fin support angle braces, P/N 47-267-085-5 and -6 shafe the tail boom longeron, P/N 47-267-057-111 due to interference of these parts. The longeron must be inspected on both sides for wear and damage. Any damage of the longeron in excess of 0.008 inch, based on the diameter of the undamaged tube, must be repaired. 1/32 inch clearance must be provided between the support angle braces and the longeron. Additional rework of the 47-267-057-167 angle brace by the welding of a 1/16-inch steel plate, 3/4-inch x 3 inches, to the back of this part may be necessary to provide adequate clearance, if repair of the longeron by means of a split tube sleeve has been accomplished.

(Bell Mandatory Service Bulletin No. 103 dated September 30, 1955, covers this same subject and outlines the details of the inspection and repairs.)

Affected TCDS · 1

The type certificate data sheets for the models this AD names, matched by model and maker.

Registered aircraft · 152

Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.

By aircraft maker
  • Bell142 aircraft
  • Bell-K-Copter3 aircraft
  • Bell-Carson1 aircraft
  • Bell-Olympic Helicopters1 aircraft
  • Bell-Shippey1 aircraft
  • Other makers44 aircraft
By year built
19472010
Registered aircraft by year built: 106 aircraft
19473
19482
19511
19525
19536
19546
19554
195617
195713
195816
19597
19606
19621
19634
19653
19672
19681
19691
19721
19741
19752
19761
19791
19801
20101

46 with no year recorded

By model

Aircraft

See all 152 aircraft