Lockheed L-382 (L-100) Hercules — Primary-Source Technical Documentation

The Lockheed L-382, marketed in civilian configuration as the L-100 Hercules, is the commercial derivative of the legendary C-130 military transport. Powered by four Allison 501-D22A turboprop engines delivering 4,510 shp each, the L-382 established itself as the backbone of civilian heavy-lift operations worldwide — from remote airstrip logistics to humanitarian airlift. This archival collection brings together four original factory publications issued by Lockheed-Georgia Company, Marietta, Georgia, covering the Model 382B variant in its 1965–1966 baseline configuration.

Document Manifest

1. SMP515-1 — Maintenance Instructions: General Information, Ground Handling, Servicing, Airframe Maintenance and Cargo Loading
Lockheed-Georgia Company · 1 November 1965 · Changed 4 October 1966 · Includes Temporary Revision dated 26 September 1966
The foundational maintenance reference for the L-382B airframe. Covers ground handling procedures, servicing schedules, airframe structural maintenance, and cargo loading protocols. Essential for understanding the aircraft's operational ground environment and structural care requirements.

2. SMP515-2 — Maintenance Instructions: Hydraulic Systems
Lockheed-Georgia Company · 1 November 1965 · Changed 5 October 1966 · Stamped 13 March 1967
Dedicated volume covering the complete hydraulic architecture of the L-382B. Documents the hydraulic boost systems governing ailerons, elevator, and rudder, as well as landing gear actuation, flap systems, and associated servicing procedures. A critical reference for understanding the aircraft's flight control philosophy.

3. SMP514 — FAA Approved Airplane Flight Manual, Lockheed Model 382B with Allison 501-D22 Engines
Lockheed Aircraft Corporation · Approved 5 October 1965 · FAA Approval: R.H. Stanton, Chief, Engineering and Manufacturing Branch, Southern Region, Federal Aviation Agency
The type-certified flight manual governing the L-382B under FAA Type Certificate A1SO. Establishes operational limits, approved fuels, weight constraints, and performance data for the Allison 501-D22 powerplant configuration. The primary regulatory document for the civilian L-100 certification baseline.

4. SMP514-1 — Operating Manual for Lockheed Model 382B Hercules
Lockheed-Georgia Company · 20 October 1965 · Changed 10 June 1966
The crew operating manual for the L-382B, covering normal and emergency procedures, systems descriptions, and performance data for flight operations. Companion volume to the FAA Flight Manual, providing the operational depth required for crew training and simulator reference.

Aircraft Technical Profile

Aerodynamics & Configuration

• High-wing, straight-wing design optimised for stability in low-speed, short-field, and unpaved-runway operations
• Aerodynamic derivatives documented across flap configurations: 0%, 50%, and 100% — based on wind tunnel and flight test data
• Maximum airspeed: 308 knots (354 mph) at 20,000 ft operational altitude
• STOL capability with predictable handling on rough terrain airfields

Powerplant

• Four Allison 501-D22A turboprop engines, 4,510 shp each
• AeroProducts or Hamilton Standard constant-speed, fully feathering, and reversible propellers
• Engine bleed air routed to Environmental Control Systems (ECS) and structural anti-icing: wing leading edges, tail surfaces, and engine inlets
• Technical directives cover T56/Allison control arms, fuel bleed configurations, and inlet anti-icing systems

Performance Data (L-100-30 Variant)

• Maximum Takeoff Weight (MTOW): 155,000 lb (70,300 kg)
• Empty weight: 77,740 lb
• Maximum payload: 51,050 lb (23,150 kg)
• Operational range (full payload): 1,334 nautical miles
• Maximum rate of climb: 1,830 ft/min
• Service ceiling: 23,000 ft

Handling, Stability & Control

• Hydraulic boost systems govern ailerons, elevator, and rudder to mitigate high control forces
• Fuselage stretch variants: L-100-20 (+100 in) and L-100-30 (+180 in) — aerodynamic centre and CG limits revised accordingly
• Flight qualities closely shared with C-130 E/H military variants

Engineering & Service Bulletins

• Structural lifespan regulated by SMP515-C, establishing Limit of Validity (LOV) for widespread fatigue damage tracking
• Routine eddy current inspections mandated on high-stress zones including centre wing lower forward corner fittings
• Modifications executed via Detailed Bulletins (field step-by-step) or Record Bulletins (structural drawing lists)
• Lockheed Martin Service News addresses structural inspections, centre wing maintenance thresholds, and airworthiness directives

⚠️ Regulatory Notice: Under FAA 14 CFR § 43.13 and EASA Part-M, any mechanic performing maintenance on an active aircraft must use current, manufacturer-approved revision-controlled data. This archival document does not satisfy that requirement.

This is an archival, static-copy edition fixed at its original publication date. Intended for historical reference, flight simulation, museum restoration, and educational use only. Not approved for active airworthiness maintenance under FAA 14 CFR § 43.13, EASA Part-M, or equivalent international regulations. Operators of active aircraft must use current, revision-controlled publications from the Type Certificate holder or an authorized distributor.
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