AD 78-12-11

Airworthiness directive · Electrical Overload · Textron HS.125 Series 700A

Effective
June 26, 1978
Model
HS.125 Series 700A
Data sheet
TCDSA3EU
Registered aircraft
22 matched by model
Product
Aircraft · Large airplane
Amendment
39-3237

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

78-12-11 BRITISH AEROSPACE, INC.: Amendment 39-3237. Applies to (Hawker Siddeley) Model HS-125 Series 700A Airplanes, serial numbers NA 0201 thru NA 0210 and NA 0218, certificated in all categories.

Compliance is required as indicated unless already accomplished.

To prevent electrical overload and possible fire, accomplish the following in accordance with Section 2, "ACCOMPLISHMENT INSTRUCTIONS" of British Aerospace (formerly Hawker Siddeley Aviation Ltd.) Service Bulletin 24-203 (2653), dated December 14, 1977, or an FAA approved equivalent.

(a) Within 10 hours time in service after the effective date of this AD, replace the existing Minyvin 20 beacon light cable and associated marker sleeves and terminal lugs with Minyvin 16 cable and associated B25Y marker sleeves and 36151 terminal lugs or with parts specified in paragraph (b) of this AD.

(b) Nyvin 16 or MIL-W-5086 Series 2 cable may be used as alternate replacement cables. Also, FAA approved equivalent marker sleeves including single sleeves with indelible coding may be used in lieu of B25Y sleeves.

This amendment becomes effective June 26, 1978.

Affected TCDS · 1

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

Registered aircraft · 22

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
  • British Aerospace14 aircraft
  • Hawker Siddeley7 aircraft
  • Raytheon1 aircraft
By year built
19771984
Registered aircraft by year built: 11 aircraft
19771
19781
19802
19811
19825
19841

11 with no year recorded

By model

Aircraft

See all 22 aircraft