STC SA4835NM

Supplemental type certificate · Heavy Lift Helicopters Inc.

Holder
Heavy Lift Helicopters Inc. · United States
Status
Current · Reissued
Status date
August 21, 2002
Applied
September 11, 1989
Product
Aircraft · Large Airplane
Certification basis
Part 25
Data sheet
TCDSA31NM

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.

What it approves

Installation of Retardant Tanks for the special purpose of Forest and Wildlife Conservation.

What the certificate saysOCR

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

0, 10 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA4835NM This certificate issued to: Heavy Lift Helicopters, Inc.

19378 Central Road Apple Valley, California 92307 Part 25 of the Federal Aviation Pegulations.

Original Product Type Certificate Number: A31NM Make: Hemet Valley Flying Service Model: C-130A Description of Type Design Change: Installation of Retardant Tanks for the special purpose of Forest and Wildlife Conservation in accordance with FAA approved Master Drawing List 3130-1000, dated August 24, 1989, N/C or later FAA approved revision. The FAA approved Hemet Valley Flying Service Airplane Flight Manual Supplement dated January 30, 1990, or later FAA approved revision is required as part of this approval.

Limitations and Conditions: The approval of this change applies to C-130A airplanes only. This installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this change and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of Application: September, 11, 1989 Date Reissued: August 21, 2002 Date of Issuance: January 31, 1990 Date Amended:

FEDERAL AVIATION By Direction of the Administrator (Signature) TOMINSTRATIO Acting Manager, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) NumberSA4835NM Limitations and Conditions: (Continued) Retardant drop shall be limited to speeds less than 150 knots and greater than 1.25 Vs and greater than Vmc.

Max takeoff gross weight not to exceed 120, 000 Ibs.

Max zero Fuel Weight shall be 97, 000 Ib. for operations involving either firefighting or carriage of cargo (in sup port of fire fighting operations).

Max vertical acceleration at the C.G. shall be limited to 2.5 G flight load factor, flaps retracted.

If operations in severe turbulence cannot be avoided then do not exceed 65 kt above power off stall speed. Power of stall speed to be determined by the instantaneous operating weight using FIG 6-1, USAF T.O. IC-130A-1. Turbulent penetration speed not to exceed 180 kt.

Max retardant in each tank shall be limited to 13,650 lb.

Outboard wing fuel must exceed inboard wing fuel by at least 617 1b. per side.

If a cross wind landing with full retardant tanks results in severe misalignment at touchdown a special inspection is necessary before further flight for main landing gear structural components and supporting structure, and fuselage structure between the main gears, and the nose landing gear structures.

The airplane operation is limited to wind conditions in the drop zone of 40 kt over the ridges.

The cable tiedowns for the retardant tanks shall have minimum breaking strength of 12, 000 Ib.

The 3/8 inch cable must comply with MIL SPEC W-1511 described on page 8.4.1.2 of MIL H/B 5A. Cable tiedown angles are critical and installation must follow the Installation Drawing 3130- 1200.

Cargo loading shall not exceed the weight limitations given in USAF T.O. IC-130A-1 Section V.

Cargo landings to be secured and restrained per USAF T.O. IC-130A-9.

...-END-...

47.

ADs that name this STC · 0

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No AD in this release names this STC

Approved models · 1

MakeModelData sheet
Hemet Valley Flying ServiceC-130AA31NM