Part #: 522-3241-00

Model: 332E-4

Collins Aerospace - Directional Gyro
Part Number :

  • Electrically driven Directional Gyro used with PN-101 Compass System
  • Provides dynamic or short-term portion of magnetic heading output for compass system
  • Electrical excitation for gyro provided by 328A-3G slaving accessory
  • 3-wire synchro from output
Dimensions: 4.81"W x 7.375"H x 6.00"L Weight: 4.5 lbs.
Warmup Time: Instrument performance will be achieved 1 minute after application of rated power. Three minutes are required to obtain maximum rotor speed Service: Continuous service
Mounting: Rigid mount and secured with four thumbscrews Temperature: -55 to 70C (operating)
Altitude: -1000 to 40000 feet Power Source: 26 volts, 400 Hz, single-phase, 115 volts, 400 Hz, single-phase
Signal Output: 3-wire ac signal with a maximum line-to-line value of 11.8 volts Accuracy: Transmitter error will not exceed +20 minutes
Part NumberDirectional Gyro Description:
522-3241-000 see details above


- Directional Gyro
Price Condition Delivery

SEA Repair Capabilities: Yes

- Directional Gyro
Price Condition Delivery

SEA Repair Capabilities: Yes

Click on a question below to see the answer. If you have a question about this model that is not answered below, please contact

Yes. The C-14A directional gyro can be used in place of the 332E-4 dir. gyro and 328A-3G slaving amp. However, the amplifier in the C-14A gyro is not enough to drive the compass card in the 331A-3G HSI. Therefore, the 341C-1 servo amplifier must be used in conjunction with the C-14A to function properly the Collins PN-101.
Southeast Aerospace exchanges are based on the return of an undamaged, economically repairable core unit with identical part number as the unit shipped to the customer. An "economically repairable" core is defined as one where the cost to repair/overhaul (or Repair Cap) does not exceed 80% of the original SV/OH exchange price billed. Should the Repair Cap exceed 80%, the customer will be billed the additional amount. In the event this amount exceeds the Outright Price for the unit, the customer would only be billed the difference between the Outright Price and SV/OH Exchange Price with the core returned as-is to the customer.

Here is an example of such a transaction:

$1000 Exchange Price charged to customer
$1000 x .8 = $800 Maximum Allowable core repair charge or Repair Cap

$2000 Cost to repair core unit
- $800 Less Core repair cap
$1200 Additional billing amount.

2200.00 Total Cost of transaction

Please Note:
SEA offers exchange on new items as well. However, repair cap as indicated above is still based on SV/OH exchange price.

Negotiating the exchange price of a unit only limits the allowable repair cap for the core unit. Southeast Aerospace's exchange transactions are based on the return of economically repairable core unit. Once the core is received and evaluated, the core repair cost incurred by SEA cannot exceed 80% of the original exchange price. That is, it cannot cost SEA more than 80% of the original OH/SV exchange price collected from the customer. Therefore, when and if an SEA exchange price is discounted, there is a risk that additional charges may be assessed once the core is returned and evaluated.

For more information, please refer to these other Exchange FAQs

Most of the Collins Proline I components were originally manufactured in the early 1970s. Collins has continued to produce some of the Proline I components by special order over the past 30 years however large scale production stopped many years ago. Most of the Collins Proline I product lines incorporates 1960s and 70s analog technology. Collins has superseded the Proline I product line several times with the Proline II, Proline IV, and Proline 21 lines. As a result, some service parts needed to maintain and repair original Collins Proline I components are no longer available. Therefore, you may experience limited to no warranty available and unreliability for many of the Proline I units.

Southeast Aerospace offers many affordable, upgradeable options that are available for aircraft with Collins Proline I. As avionics integration specialists and premiere Collins dealer, Southeast Aerospace is experienced and knowledgeable on all Collins Proline generations.

If you are interested in upgrading any of your original Collins Proline I systems, please contact us for the most reasonable, optimal choice available.