637 

Federal Aviation Administration, DOT 

Pt. 27 

27.963

Fuel tanks: general. 

27.965

Fuel tank tests. 

27.967

Fuel tank installation. 

27.969

Fuel tank expansion space. 

27.971

Fuel tank sump. 

27.973

Fuel tank filler connection. 

27.975

Fuel tank vents. 

27.977

Fuel tank outlet. 

F

UEL

S

YSTEM

C

OMPONENTS

 

27.991

Fuel pumps. 

27.993

Fuel system lines and fittings. 

27.995

Fuel valves. 

27.997

Fuel strainer or filter. 

27.999

Fuel system drains. 

O

IL

S

YSTEM

 

27.1011

Engines: General. 

27.1013

Oil tanks. 

27.1015

Oil tank tests. 

27.1017

Oil lines and fittings. 

27.1019

Oil strainer or filter. 

27.1021

Oil system drains. 

27.1027

Transmissions and gearboxes: Gen-

eral. 

C

OOLING

 

27.1041

General. 

27.1043

Cooling tests. 

27.1045

Cooling test procedures. 

I

NDUCTION

S

YSTEM

 

27.1091

Air induction. 

27.1093

Induction system icing protection. 

E

XHAUST

S

YSTEM

 

27.1121

General. 

27.1123

Exhaust piping. 

P

OWERPLANT

C

ONTROLS AND

A

CCESSORIES

 

27.1141

Powerplant controls: general. 

27.1143

Engine controls. 

27.1145

Ignition switches. 

27.1147

Mixture controls. 

27.1151

Rotor brake controls. 

27.1163

Powerplant accessories. 

P

OWERPLANT

F

IRE

P

ROTECTION

 

27.1183

Lines, fittings, and components. 

27.1185

Flammable fluids. 

27.1187

Ventilation and drainage. 

27.1189

Shutoff means. 

27.1191

Firewalls. 

27.1193

Cowling and engine compartment 

covering. 

27.1194

Other surfaces. 

27.1195

Fire detector systems. 

Subpart F—Equipment 

G

ENERAL

 

27.1301

Function and installation. 

27.1303

Flight and navigation instruments. 

27.1305

Powerplant instruments. 

27.1307

Miscellaneous equipment. 

27.1309

Equipment, systems, and installa-

tions. 

27.1316

Electrical and electronic system 

lightning protection. 

27.1317

High-intensity Radiated Fields 

(HIRF) Protection. 

I

NSTRUMENTS

: I

NSTALLATION

 

27.1321

Arrangement and visibility. 

27.1322

Warning, caution, and advisory 

lights. 

27.1323

Airspeed indicating system. 

27.1325

Static pressure systems. 

27.1327

Magnetic direction indicator. 

27.1329

Automatic pilot system. 

27.1335

Flight director systems. 

27.1337

Powerplant instruments. 

E

LECTRICAL

S

YSTEMS AND

E

QUIPMENT

 

27.1351

General. 

27.1353

Storage battery design and installa-

tion. 

27.1357

Circuit protective devices. 

27.1361

Master switch. 

27.1365

Electric cables. 

27.1367

Switches. 

L

IGHTS

 

27.1381

Instrument lights. 

27.1383

Landing lights. 

27.1385

Position light system installation. 

27.1387

Position light system dihedral an-

gles. 

27.1389

Position light distribution and in-

tensities. 

27.1391

Minimum intensities in the hori-

zontal plane of forward and rear position 
lights. 

27.1393

Minimum intensities in any vertical 

plane of forward and rear position lights. 

27.1395

Maximum intensities in overlapping 

beams of forward and rear position 
lights. 

27.1397

Color specifications. 

27.1399

Riding light. 

27.1401

Anticollision light system. 

S

AFETY

E

QUIPMENT

 

27.1411

General. 

27.1413

Safety belts. 

27.1415

Ditching equipment. 

27.1419

Ice protection. 

27.1435

Hydraulic systems. 

27.1457

Cockpit voice recorders. 

27.1459

Flight data recorders. 

27.1461

Equipment containing high energy 

rotors. 

Subpart G—Operating Limitations and 

Information 

27.1501

General. 

O

PERATING

L

IMITATIONS

 

27.1503

Airspeed limitations: general. 

27.1505

Never-exceed speed. 

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