ROBINSON R22 SERIES SECTION 6 WEIGHT AND BALANCE
Robinson R22 Beta · Weight And Balance
Overview
This document provides essential information regarding the weight and balance of the Robinson R22 helicopter. It outlines the importance of adhering to specified weight and balance limits to ensure safe operation. The document includes loading instructions, a weight and balance record form, and sample calculations for determining the helicopter's loaded weight and center of gravity (CG). It is intended for pilots and maintenance personnel to ensure compliance with FAA regulations and safe loading practices. The loading instructions have been approved by the FAA, while the detailed weight and balance data are not subject to FAA approval. The document emphasizes the need to recalculate weight and balance after any changes in equipment or loading.
- The helicopter must be flown within specified weight and balance limits to ensure safe operation.
- Ballast can be added to adjust the center of gravity, and recalculation is necessary after any changes.
- The basic empty weight of the R22 is 880 lb, and the maximum takeoff weight is 1367.6 lb as per sample calculations.
- Fuel burn affects the CG; always check loading with both empty and full fuel conditions.
- A longitudinal arm of 106.9 in. may be used for combined main and auxiliary fuel calculations.
Document
Source
Originally published by robinsonstrapistorprod.blob.core.windows.net. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Weight And Balance
- Year
- 2014
- Pages
- 10
- File size
- 98 KB
- Publisher
- robinsonstrapistorprod.blob.core.windows.net
Specifications & performance
Extracted from this document.
Specifications
- Empty weight (lb)
- 880
- Max takeoff weight (lb)
- 1,367.6
Weight & balance
- Basic empty weight (lb)
- 880
- Max takeoff weight (lb)
- 1,367.6
Common. One of the most common aircraft types we track.
Most owners only have the POH. Here's the essential set for the Robinson R22 Beta.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
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In this document
General
This section emphasizes the necessity of operating the helicopter within specified weight and balance limits to maintain control. It mentions that the center of gravity (CG) can be adjusted by adding ballast and stresses the importance of recalculating weight and balance after any changes.
Weight and Balance Record
A form is provided for maintaining a continuous record of the helicopter's weight and balance. It is crucial to update this record each time equipment is added or removed, ensuring the new empty CG is determined.
Loading Instructions
This section includes a table for calculating loaded helicopter weight and CG position based on various items and their weights. It provides specific weights and arm measurements for pilots and baggage, fuel, and other items.
Sample Loading Calculation
A detailed example demonstrates how to calculate the loaded helicopter weight and CG. It includes a worksheet for pilots to perform their calculations, ensuring that the loaded weight and CG remain within safe limits.
Safety notes
- Loading outside specified limits can result in insufficient control travel for safe operation.
- Fuel burn causes the CG to move forward during flight; always determine safe loading with empty fuel as well as with takeoff fuel.
Full document text
SECTION 6 WEIGHT AND BALANCE CONTENTS Page General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Weight and Balance Record . . . . . . . . . . . . . . . . . . . . . . 6-2 Loading Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4 REVISED: 21 FEB 2014 6-i ROBINSON R22 SERIES SECTION 6 WEIGHT AND BALANCE INTENTIONALLY BLANK SECTION 6 WEIGHT AND BALANCE GENERAL The helicopter must be flown only within weight and balance limits specified in Section 2. Loadings outside these limits can result in insufficient control travel for safe operation. The center of gravity may be adjusted by adding removable ballast (any appropriate item of mass) to an under-seat baggage compartment. Recalculate weight and balance after adding ballast, and verify ballast meets baggage compartment limits given in Section 2. Loaded helicopter weight and balance can be determined using the method given under LOADING INSTRUCTIONS. In accordance with FAA procedures, the detail weight and balance data of this section are not subject to FAA approval. The loading instructions of this section, however, have been approved by the FAA as satisfying all requirements for instructions on loading of the rotorcraft within approved limits of weight and center of gravity and on maintaining the loading within such limits. CAUTION Fuel burn causes CG to move forward during flight. Always determine safe loading with empty fuel as well as with takeoff fuel. Payload may be limited by forward CG as fuel is burned. ROBINSON R22 SERIES SECTION 6 WEIGHT AND BALANCE REVISED: 21 FEB 2014 6-1 WEIGHT AND BALANCE RECORD The following form should be used to maintain a continuous record of your helicopter’s weight and balance. Each time an item of equipment is removed or installed, an entry must be made and the new empty CG determined. The original factory weight and balance and an equipment list is supplied with each helicopter on a form which is inserted at the end of this section. This weight and balance provides the first entry in the Weight and Balance Record form. NOTE Calculated CG with full fuel and 135 lb pilot (130 lb pilot without auxiliary fuel tank) must be within CG limits. Following modification, adjustment to fixed nose ballast may be required. See R22 Maintenance Manual. REVISED: 21 FEB 2014 6-2 ROBINSON R22 SERIES SECTION 6 WEIGHT AND BALANCE REVISED: 21 FEB 2014 6-3 WEIGHT AND BALANCE RECORD (Continuous History of Changes in Structure or Equipment Affecting Weight and Balance) HELICOPTER MODEL R22 SERIAL NUMBER: DATE DESCRIPTION OF ARTICLE OR MODIFICATION WEIGHT CHANGE RUNNING BASIC EMPTY WEIGHT ADDED (+) REMOVED (—) WEIGHT (lb) LONGITUDINAL LATERAL (+ = RIGHT SIDE) WEIGHT (lb) LONGITUDINAL LATERAL Arm (in.) Moment (in.-lb) Arm (in.) Moment (in.-lb) Arm (in.) Moment (in.-lb) Arm (in.) Moment (in.-lb) HELICOPTER AS WEIGHED ROBINSON R22 SERIES SECTION 6 WEIGHT AND BALANCE WEIGHT AND BALANCE RECORD (cont’d) REVISED: 22 FEB 2024 6-4 LOADING INSTRUCTIONS The following table may be used when calculating loaded helicopter weight and CG position. COMMON ITEM WEIGHT & CG Item Weight (lb) Longitudinal arm (in.) Lateral arm (in.) (+ = right side) Pilot and baggage under right seat 78.0* +10.7 Passenger and baggage under left seat 78.0* —9.3 Main fuel** 108.6 —11.0 Aux fuel** 103.8 +11.2 Doors 5.2 each 77.5 ±21.0 Removable controls (cyclic, collective, pedals) 2.6 66.3 —12.9 Items on accessory mount bars 53.0 ±12.0 * Use 79.0 in. for aircraft prior to S/N 0256 with early-style seats. If additional backrest cushion is used, subtract thickness of compressed cushion. ** A longitudinal arm of 106.9 in. may be used for combined main and aux fuel. ROBINSON R22 SERIES SECTION 6 WEIGHT AND BALANCE REVISED: 22 FEB 2024 6-5 LOADING INSTRUCTIONS (cont’d) The following sample calculation demonstrates how to determine loaded helicopter weight and center of gravity. A worksheet is provided on the page following the sample calculation for a weight and balance calculation for your helicopter. Calculated weight and balance must be compared with the CG limits given in Section 2 to determine safe loading. Both takeoff and empty fuel conditions must be within limits. Lateral CG usually falls well within limits for conventional loadings. If an unusual lateral installation or loading occurs, lateral CG should be checked against the CG limits given in Section 2. The lateral reference datum is the aircraft centerline with items to the right positive and items to the left negative. ROBINSON R22 SERIES SECTION 6 WEIGHT AND BALANCE LOADING INSTRUCTIONS (cont’d) SAMPLE LOADING CALCULATION Item Weight (lb) Location Moment Long. Arm (in.) Lat. Arm (in.) += Right Side Long. (in.-lb) Lat. (in.-lb) Basic empty weight 880 104.0 —0.1 91,520 —88 Remove right door —5.2 77.5 21.0 —403 —109 Remove left door 77.5 —21.0 Remove left seat controls 66.3 —12.9 Right seat pilot and baggage 170 78.0 10.7 13,260 1819 Left seat passenger and baggage 160 78.0 —9.3 12,480 —1488 Items on accessory mount bars 5 53.0 12.0 265 60 Zero usable fuel weight and CG* 1209.8 96.8 0.2 117,122 194 Usable main fuel at 6 lb/gal. 101.4 108.6 —11.0 11,012 —1115 Usable aux fuel at 6 lb/gal. 56.4 103.8 11.2 5854 632 Takeoff Gross Weight and CG* 1367.6 98.0 —0.2 133,988 —289 * CG location (arm) for loaded helicopter is determined by dividing total moment by total weight. ROBINSON R22 SERIES SECTION 6 WEIGHT AND BALANCE REVISED: 22 FEB 2024 6-6 ROBINSON R22 SERIES SECTION 6 WEIGHT AND BALANCE REVISED: 22 FEB 2024 6-7 LOADING INSTRUCTIONS (cont’d) LOADING CALCULATION WORKSHEET Item Weight (lb) Location Moment Long. Arm (in.) Lat. Arm (in.) += Right Side Long. (in.-lb) Lat. (in.-lb) Basic empty weight Remove right door 77.5 21.0 Remove left door 77.5 —21.0 Remove left seat controls 66.3 —12.9 Right seat pilot and baggage 78.0 10.7
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Left seat passenger and baggage 78.0 —9.3 Items on accessory mount bar 53.0 ±12.0 Zero usable fuel weight and CG* Usable main fuel at 6 lb/gal. 108.6** —11.0 Usable aux fuel at 6 lb/gal. 103.8** 11.2 Takeoff Gross Weight and CG* * CG location (arm) for loaded helicopter is determined by dividing total moment by total weight. ** A longitudinal arm of 106.9 in. may be used for combined main and aux fuel. Do not use combined main and aux fuel if calculating lateral arm. INTENTIONALLY BLANK ROBINSON R22 SERIES SECTION 6 WEIGHT AND BALANCE REVISED: 23 FEB 2004 6-8
What's in the Robinson R22 Beta TCDS
A Type Certificate Data Sheet (TCDS) is the FAA's record of what an aircraft type was approved as. It is the source of truth for weights, seating, fuel and the rules the design was certified against. Expand any line to see what it means.
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