AD 48-14-03

Airworthiness directive · Wing Center Section Spar · Textron Army AT-11 and C18S

Models
Army AT-11, C18S
Registered aircraft
13 matched by model
Product
Aircraft · Small airplane

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 January 21, 2026.

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The airworthiness directive

48-14-03 BEECH: Applies to Models AT-11 and C18S.

Compliance required by next periodic inspection but not later than July 1, 1948.

Inspect the lower member of the center section main wing spar in the landing gear nacelle area for evidence of wear caused by chafing of the cabin heater control housing. To prevent chafing either use clamps to support housing or cover control housing with 20-inch length of synthetic rubber hose.

Affected TCDS · 2

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

Registered aircraft · 13

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
  • Beech13 aircraft
By year built
19421945
Registered aircraft by year built: 9 aircraft
19421
19432
19445
19451

4 with no year recorded

By model

Aircraft