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196 

14 CFR Ch. I (1–1–19 Edition) 

Pt. 25 

F

LIGHT

M

ANEUVER AND

G

UST

C

ONDITIONS

 

25.331

Symmetric maneuvering conditions. 

25.333

Flight maneuvering envelope. 

25.335

Design airspeeds. 

25.337

Limit maneuvering load factors. 

25.341

Gust and turbulence loads. 

25.343

Design fuel and oil loads. 

25.345

High lift devices. 

25.349

Rolling conditions. 

25.351

Yaw maneuver conditions. 

S

UPPLEMENTARY

C

ONDITIONS

 

25.361

Engine and auxiliary power unit 

torque. 

25.362

Engine failure loads. 

25.363

Side load on engine and auxiliary 

power unit mounts. 

25.365

Pressurized compartment loads. 

25.367

Unsymmetrical loads due to engine 

failure. 

25.371

Gyroscopic loads. 

25.373

Speed control devices. 

C

ONTROL

S

URFACE AND

S

YSTEM

L

OADS

 

25.391

Control surface loads: General. 

25.393

Loads parallel to hinge line. 

25.395

Control system. 

25.397

Control system loads. 

25.399

Dual control system. 

25.405

Secondary control system. 

25.407

Trim tab effects. 

25.409

Tabs. 

25.415

Ground gust conditions. 

25.427

Unsymmetrical loads. 

25.445

Auxiliary aerodynamic surfaces. 

25.457

Wing flaps. 

25.459

Special devices. 

G

ROUND

L

OADS

 

25.471

General. 

25.473

Landing load conditions and assump-

tions. 

25.477

Landing gear arrangement. 

25.479

Level landing conditions. 

25.481

Tail-down landing conditions. 

25.483

One-gear landing conditions. 

25.485

Side load conditions. 

25.487

Rebound landing condition. 

25.489

Ground handling conditions. 

25.491

Taxi, takeoff and landing roll. 

25.493

Braked roll conditions. 

25.495

Turning. 

25.497

Tail-wheel yawing. 

25.499

Nose-wheel yaw and steering. 

25.503

Pivoting. 

25.507

Reversed braking. 

25.509

Towing loads. 

25.511

Ground load: unsymmetrical loads on 

multiple-wheel units. 

25.519

Jacking and tie-down provisions. 

W

ATER

L

OADS

 

25.521

General. 

25.523

Design weights and center of gravity 

positions. 

25.525

Application of loads. 

25.527

Hull and main float load factors. 

25.529

Hull and main float landing condi-

tions. 

25.531

Hull and main float takeoff condi-

tion. 

25.533

Hull and main float bottom pressures. 

25.535

Auxiliary float loads. 

25.537

Seawing loads. 

E

MERGENCY

L

ANDING

C

ONDITIONS

 

25.561

General. 

25.562

Emergency landing dynamic condi-

tions. 

25.563

Structural ditching provisions. 

F

ATIGUE

E

VALUATION

 

25.571

Damage—tolerance and fatigue eval-

uation of structure. 

L

IGHTNING

P

ROTECTION

 

25.581

Lightning protection. 

Subpart D—Design and Construction 

G

ENERAL

 

25.601

General. 

25.603

Materials. 

25.605

Fabrication methods. 

25.607

Fasteners. 

25.609

Protection of structure. 

25.611

Accessibility provisions. 

25.613

Material strength properties and ma-

terial design values. 

25.619

Special factors. 

25.621

Casting factors. 

25.623

Bearing factors. 

25.625

Fitting factors. 

25.629

Aeroelastic stability requirements. 

25.631

Bird strike damage. 

C

ONTROL

S

URFACES

 

25.651

Proof of strength. 

25.655

Installation. 

25.657

Hinges. 

C

ONTROL

S

YSTEMS

 

25.671

General. 

25.672

Stability augmentation and auto-

matic and power-operated systems. 

25.675

Stops. 

25.677

Trim systems. 

25.679

Control system gust locks. 

25.681

Limit load static tests. 

25.683

Operation tests. 

25.685

Control system details. 

25.689

Cable systems. 

25.693

Joints. 

25.697

Lift and drag devices, controls. 

25.699

Lift and drag device indicator. 

25.701

Flap and slat interconnection. 

25.703

Takeoff warning system. 

L

ANDING

G

EAR

 

25.721

General. 

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