AGK-77-15

AGK-77-15 attitude indicator is a gyroscopic flight instrument designed to provide the pilot with visual information about the aircraft attitude relative to the true horizon. The instrument indicates roll and pitch angles, provides sideslip indication, and generates electrical roll and pitch signals for external onboard systems.

The unit belongs to gyroscopic flight and navigation instruments and is installed as part of aircraft instrument systems on fixed-wing aircraft and helicopters. The attitude indicator provides roll indication within ±360° and pitch indication within ±85°, ensuring reliable attitude information during various flight regimes, including turns, maneuvers, and operations in adverse weather conditions.

AGK-77-15 is designed for operation under dynamic conditions, including oscillating and vibrating bases. The instrument maintains specified accuracy after performing 180° turns and during exposure to vibration and motion. An integrated bank angle warning system provides indication when preset roll angle limits are exceeded.

The instrument is powered by a three-phase AC power supply at 400 Hz and a DC power supply at 27 V. AGK-77-15 is applied on An-28 and An-140 aircraft, as well as Mi-8AMT, Mi-17 and B-3 helicopters.

Purpose: Visual indication of roll and pitch angles, sideslip indication, and generation of roll and pitch output signals for external systems
Systems: Flight and navigation instrument systems
Application: An-28, An-140 aircraft; Mi-8AMT, Mi-17, B-3 helicopters
Product Type: Gyroscopic attitude indicator
Roll Range: ±360°
Pitch Range: ±85°
Sideslip Indication: Provided
Warm-Up Time: Not more than 3 min
AC Power Supply: Three-phase AC 36 V, 400±20 Hz
AC Voltage Tolerance: +1.8 / −3.6 V
DC Power Supply: 27 V
DC Voltage Tolerance: +2.4 / −3.0 V
AC Current Consumption (phases A, B, C): Not more than 0.45 A
Indication Error at bank angles less than 8°: Not more than ±1.4°
Indication Error at bank angles more than 8°: Not more than ±0.3°
Error on oscillating base: Not more than ±1.5°
Error on vibrating base: Not more than ±2.5°
Error after 180° turns (3 min): Not more than ±4°
Bank Angle Warning Activation Angles: ±(15±1.5)° and ±(32±2)°
Pitch Indication Limits: Upward 7°, downward 10°
Weight: Not more than 4 kg
Dimensions: 107×107×250 mm
Condition: As applicable
Documentation: Technical documentation available upon request

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Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.