PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

42281Gyroscope,displacement

Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp · NSN 6615-00-900-6853 · FSC 6615 · No Item Name Available
Verified by PartsTable
NSN 6615-00-900-6853 — this item is cataloged by the U.S. Government under National Stock Number 6615-00-900-6853. Primary manufacturer part number: 42281.
Features
  • Gyroscope,displacement — FSC 6615
  • Sensing Output/signal Level Method: SYNCHRO 115 VAC 400 CYCLE PHASE INPUT 11.8 V OUTPUT VAC
  • Gimbal Torque Application Method: TORQUE MOTOR
  • Torqued Gimbal Quantity: 2
  • Relationship to Similar Equipment: SBU-23A/A GYROSCOPE CAN BE USED WITH THE MD-1 MOUNTING PLATE AS A REPLACEMENT ASSEMBLY FOR THIS NSN A
  • Design Type: NONCAGEABLE
  • Wheel Power Method: ELECTRIC
  • Phase: THREE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Gyroscope,displacement, cataloged under National Stock Number 6615-00-900-6853, is classified within Federal Supply Class 6615 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6615-00-900-6853
Primary Part Number42281
Item NameGyroscope,displacement
FSC / FSG6615 / 66 — No Item Name Available
ManufacturerSikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
StatusACTIVE
Sensing Output/signal Level MethodSYNCHRO 115 VAC 400 CYCLE PHASE INPUT 11.8 V OUTPUT VAC
Gimbal Torque Application MethodTORQUE MOTOR
Torqued Gimbal Quantity2
Relationship to Similar EquipmentSBU-23A/A GYROSCOPE CAN BE USED WITH THE MD-1 MOUNTING PLATE AS A REPLACEMENT ASSEMBLY FOR THIS NSN A
Design TypeNONCAGEABLE
Wheel Power MethodELECTRIC
PhaseTHREE
Current TypeAC
Nondefinitive Spec/std DataMD-1 TYPE
Freedom Axis Quantity2
Instrument TypeUNFLOATED
Shock MountNOT PROVIDED
Axis Displacement Limitation in DegPORM 360 DEG FOR ROLL AXIS; PORM 82 DEG FOR PITCH AXIS
Voltage in Volts115.0
Gimbal Quantity2
Unit TypeVERTICAL
Frequency in Hertz400.0
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6615-00-060-531441638 INTERCHANGEABLE
Gyroscope,displacement
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
6615-00-074-4036121672-01-16 INTERCHANGEABLE
Gyroscope,displacement
Ge Aviation Systems Llc
6615-00-169-146144524 INTERCHANGEABLE
Gyroscope,displacement
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
6615-00-179-263643550 INTERCHANGEABLE
Gyroscope,displacement
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
6615-00-181-271843550-1 INTERCHANGEABLE
Gyroscope,displacement
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
6615-00-181-271943550-2 INTERCHANGEABLE
Gyroscope,displacement
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
6615-00-550-6628121672-01 INTERCHANGEABLE
Gyroscope,displacement
Ge Aviation Systems Llc
6615-00-618-980414125-1A INTERCHANGEABLE
Gyroscope,displacement
Mission Systems Davenport Inc.
3040-00-779-6351 INTERCHANGEABLE
Shaft,straight
6615-00-900-5959121672-01-17 INTERCHANGEABLE
Gyroscope,displacement
Ge Aviation Systems Llc
Cross-Reference Index
Part NumberManufacturer
MIL-G-25597 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
42281 PRIMARY Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA)
MD1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6615-00-060-5314INTERCHANGEABLE
GYROSCOPE,DISPLACEMENT
41638
6615-00-074-4036INTERCHANGEABLE
GYROSCOPE,DISPLACEMENT
121672-01-16
6615-00-169-1461INTERCHANGEABLE
GYROSCOPE,DISPLACEMENT
44524
6615-00-179-2636INTERCHANGEABLE
GYROSCOPE,DISPLACEMENT
43550
6615-00-181-2718INTERCHANGEABLE
GYROSCOPE,DISPLACEMENT
43550-1
6615-00-181-2719INTERCHANGEABLE
GYROSCOPE,DISPLACEMENT
43550-2
6615-00-550-6628INTERCHANGEABLE
GYROSCOPE,DISPLACEMENT
121672-01
6615-00-618-9804INTERCHANGEABLE
GYROSCOPE,DISPLACEMENT
14125-1A
3040-00-779-6351INTERCHANGEABLE
SHAFT,STRAIGHT
6615-00-900-5959INTERCHANGEABLE
GYROSCOPE,DISPLACEMENT
121672-01-17
6615-00-903-4414INTERCHANGEABLE
GYROSCOPE,DISPLACEMENT
42520
6615-00-933-6037INTERCHANGEABLE
GYROSCOPE,DISPLACEMENT
124623-01-14

Frequently Asked Questions

What is NSN 6615-00-900-6853?

NSN 6615-00-900-6853 is a Gyroscope,displacement, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 6615 (No Item Name Available). Status: active.

What are the part numbers for NSN 6615-00-900-6853?

NSN 6615-00-900-6853 has 3 cross-referenced part numbers: MIL-G-25597 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 42281 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), MD1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6615-00-900-6853?

There are 12 known substitutes for 6615-00-900-6853: 6615-00-060-5314, 6615-00-074-4036, 6615-00-169-1461 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 42281?

Key specifications for 42281: Overall Height: 4.875 INCHES NOMINAL IN; Sensing Output/signal Level Method: SYNCHRO 115 VAC 400 CYCLE PHASE INPUT 11.8 V OUTPUT VAC; Gimbal Torque Application Method: TORQUE MOTOR; Torqued Gimbal Quantity: 2. 21 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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