Installation of NVIS aircraft lighting modification for a Sikorsky S-76 Helicopter. Night Vision Imaging System (NVIS) modifications are required to maximize visual acuity and safety while operating an aircraft with night vision goggles (NVGs).

ASU offers nearly 40 STCs covering more than 80 makes and models of rotary and fixed-wing aircraft. 

The S-76 EFIS is hard wired to be use either metric or imperial unit for barometric pressure setting.  This design adds a maintenance-accessible switch which allows fast conversion.  This is ideal for operators who move their fleet around. Uses existing grounding straps in symbol generator design with a switch mounted forward of the instrument panel.  Not accessible in flight (on purpose).

Monitoring flight data is essential in order to ensure efficiencies and maintain safety. This piece of equipment can meet this need effectively. Heli-One offers Flight Data monitoring installation for helicopters. The system (FDM) uses a Solid State Quick Access Recorder (SSQAR) for recording flight data in parallel with the existing Flight Data Recorder. The data is directly recorded onto a removable PCMCIA card for easy access after each flight. The data can be used in a company database for analysis of trends and correction to procedures. The main interface with existing data stream is via the Harvard Bi-phase (ARINC 717) serial data line being output by the Flight Data Recorder for verification purposes. The safety of this recording has already been assessed in other projects. Any short or disturbance cannot affect either the recorded signal in the Flight Data Recorder or flight operations. The design may be adapted to other aircraft types upon request.

Installation of Composite Utility Interior in accordance with Heli-OneMaster Drawing List CHS76-25-094 MDL

Honeywell Mark XXII EGPWS is specifically configured for the dynamic factors of rotary-wing performance, which prevents Controlled Flight Into Terrain (CFIT) accidents by providing pilots with enhanced situational awareness. This modification is a fully-featured Helicopter Terrain Awareness and Warning System (HTAWS) with FAA TSO-C151b Class A and TSO-C194 approvals. The enhanced features include extensive worldwide terrain and obstacle database, look-ahead algorithms, internal GPS card, HD terrain imagery and multiple operation modes. In the event of exceeding boundaries of any alerting envelope, the EGPWS provides the flight crew with aural alert messages, visual annunciations and terrain displays, which interface with aircraft audio system, annunciators and EFIS or MFD. Multiple muting options are available for operators who regularly conduct low level operations. Depending on aircraft configurations, the EGPWS system can obtain aircraft position information either from its internal GPS system (a new GPS antenna required) or from an existing GPS system.

The EXIS lighting system installed on Sikorsky S76 aircraft is an emergency escape lighting system that highlights the pilot, co-pilot, cabin doors and popout windows. This reliable Heli-One design provides illumination of emergency exit doors and windows for at least 10 minutes following activation, giving the passengers enough time to evacuate the aircraft in case of emergency. Using Locktite brand ‘electroluminescent’ lighting strips, the system supplements the OEM emergency lighting system. The lighting strips around the pilot door, co-pilot door and the windows each have their own power supply that consists of a rechargeable battery and an inverter. The power supplies are connected to the DC Essential bus through a control switch and 1 Amp circuit breaker. Meanwhile, the lighting strips around the sliding cabin doors (if needed) are powered by a self-contained system – this is powered using a non-rechargeable battery pack and inverter with water activated switch. The system uses the original factory installed emergency lighting switch with the same functionality

When more than one antenna is required, the GPS antenna mount is a must for any S-76A/C rotorcraft. Installed on the existing tail rotor driveshaft cover of this rotorcraft, the new GPS antenna pad is designed to accommodate up to two GPS antennas. This modification is similar to other pad installations that Sikorsky has developed over the years. This simple and easy-to-install design provides a convenient way for two antennas to be installed on the tail rotor driveshaft cover.

Installation of Provisions for a EuroAvionics EuroNav IV System. STC SR02123NY-D classified as Basic by the FAA throughFAA Order 8110.52. EASA.IM.R.S.01296 FAA STC SR02123NY-D

Installation of a Honeywell Chadwick Model 15175 VXP System EASA.IM.R.S.01240 FAA STC SR02110NY-D

Installation of baggage access panel (ground use only), forward facing seat, seat pan and wet floor. EASA.IM.R.S.01109 FAA STC SR01960NY-D