# Page 405–408 of 434

> **Source:** ASD-STE100 Issue 9, January 2025
> **Pages:** 405–408 of 434

# Page 405 of 434

| **Word**<br>**(part of speech)** | **Approved meaning/**<br>**ALTERNATIVES** | **STE EXAMPLE** | **Non-STE example** |
|---|---|---|---|
| **under (prep) — UNNAPPROVED** | BELOW (prep)<br><br>IN (prep)<br><br>LESS THAN | INSTALL THE CABLE<br>THROUGH THE GUIDE<br>TUBE BELOW THE<br>CABIN FLOOR.<br><br>THIS RESULT CAN<br>OCCUR IN DIFFERENT<br>CONDITIONS.<br><br>MAKE SURE THAT THE<br>PRESSURE IS LESS<br>THAN 30 psi. | Install the cable through<br>the guide tube under the<br>cabin floor.<br><br>This result can occur<br>under different<br>conditions.<br><br><br>Make sure the pressure<br>is under 30 psi. |
| **underneath (prep) — UNNAPPROVED** | BELOW (prep) | PUT THE CONTAINER<br>BELOW THE DRAIN<br>VALVE. | Place the container<br>underneath the drain<br>valve. |
| **underside (n) — UNNAPPROVED** | BOTTOM (n) | EXAMINE THE FOUR<br>ATTACHING HOLES<br>ON THE BOTTOM. | Examine the four<br>attaching holes on the<br>underside. |
| **undertake (v) — UNNAPPROVED** | DO (v)<br>You can use a<br>more accurate<br>verb.<br><br>START (v) | DO THIS TASK IN AN<br>AREA THAT HAS<br>GOOD AIRFLOW.<br><br>DO NOT START THE<br>TEST WITHOUT<br>PRECAUTIONS. | Undertake this task in an<br>area that has good<br>airflow.<br><br>Do not undertake the<br>test without precautions. |
| **undo (v) — UNNAPPROVED** | LOOSEN (v) | LOOSEN THE BOLTS<br>THAT ATTACH THE<br>UNIT. | Undo the bolts that<br>attach the unit. |
| **undue (adj) — UNNAPPROVED** | UNWANTED (adj) | TO PREVENT<br>UNWANTED FRICTION,<br>POLISH THE<br>SURFACE. | To prevent undue<br>friction, polish the<br>surface. |
| **uneven (adj) — UNNAPPROVED** | EQUAL (adj)<br><br>ROUGH (adj) | MAKE SURE THAT THE<br>FUEL LOAD IS EQUAL<br>ON EACH SIDE OF THE<br>AIRCRAFT<br>CENTERLINE.<br><br>IF THE SURFACE IS<br>ROUGH, REPLACE<br>THE SLIDE VALVE. | <br> <br>Avoid uneven fuel load<br>about the aircraft<br>centerline.<br><br>Replace the slide valve if<br>its surface is uneven. |

# Page 406 of 434

| **Word**<br>**(part of speech)** | **Approved meaning/**<br>**ALTERNATIVES** | **STE EXAMPLE** | **Non-STE example** |
|---|---|---|---|
| **UNFOLD (v),**<br>**UNFOLDS,**<br>**UNFOLDED,**<br>**UNFOLDED** | To open or to straighten<br>or to cause to open or to<br>straighten from a folded<br>position or condition | UNFOLD THE<br>SHEETING<br>CAREFULLY.<br><br>MAKE SURE THAT THE<br>INDICATOR LIGHT<br>COMES ON WHEN THE<br>BLADES UNFOLD. |  |
| **uniform (adj) — UNNAPPROVED** | CONSTANT (adj)<br><br>EQUAL (adj) | CURE THE SEALANT<br>AT A CONSTANT<br>TEMPERATURE.<br><br>THE FUEL LOAD MUST<br>BE EQUAL ON EACH<br>SIDE OF THE<br>AIRCRAFT<br>CENTERLINE. | Cure the sealant at a<br>uniform temperature.<br><br>The fuel load must be<br>uniform on each side of<br>the aircraft centerline. |
| **uniformly (adv) — UNNAPPROVED** | EQUALLY (adv) | MAKE SURE THAT THE<br>TWO PISTONS<br>EXTEND EQUALLY. | Make sure that the two<br>pistons extend uniformly. |
| **unintentional (adj) — UNNAPPROVED** | ACCIDENTAL (adj) | A GUARD ON THE<br>CONTROL SWITCH OF<br>THE PUMP PREVENTS<br>ACCIDENTAL<br>OPERATION. | A guard on the control<br>switch of the pump<br>prevents unintentional<br>operation. |
| **unintentionally**<br>**(adv)** | ACCIDENTALLY (adv) | IF YOU<br>ACCIDENTALLY<br>SPRAY RAIN<br>REPELLENT FLUID<br>ONTO A DRY<br>WINDSHIELD,<br>REMOVE THE FLUID<br>WITH SOLVENT. | If rain repellent fluid is<br>unintentionally sprayed<br>onto a dry windshield,<br>remove the fluid with<br>solvent. |
| **UNIT (n)** | 1.<br>Equipment that<br>does a function<br><br>2.<br>A quantity that is a<br>standard of<br>measurement | YOU CAN REPLACE A<br>LARGE NUMBER OF<br>UNITS DURING THIS<br>REPAIR PROCEDURE.<br><br>THIS MANUAL USES<br>SI UNITS. |  |
| **UNKNOWN (adj)** | Not known | DO NOT USE FUEL<br>WITH UNKNOWN<br>PROPERTIES. |  |

# Page 407 of 434

| **Word**<br>**(part of speech)** | **Approved meaning/**<br>**ALTERNATIVES** | **STE EXAMPLE** | **Non-STE example** |
|---|---|---|---|
| **unlatch (v) — UNNAPPROVED** | RELEASE (v)<br><br>OPEN (v) | THE SWITCH MUST<br>RELEASE.<br><br>THE SWITCH MUST<br>OPEN. | Switch must unlatch.<br><br>Switch must unlatch. |
| **UNLESS (conj)** | Except if | DO NOT REMOVE THE<br>ADAPTER FROM THE<br>STABILIZER UNLESS A<br>REPAIR IS<br>NECESSARY. |  |
| **unload (v) — UNNAPPROVED** | RELEASE (v)<br><br>LOAD (TN) | RELEASE THE SPRING<br>TENSION.<br><br>REMOVE THE LOAD<br>FROM THE SPRING<br>BALANCE. | Unload the spring<br>tension.<br><br>Unload the spring<br>balance. |
| **UNLOCK (v),**<br>**UNLOCKS,**<br>**UNLOCKED,**<br>**UNLOCKED** | To release or become<br>released from a locked<br>condition | BEFORE YOU UNLOCK<br>THE DOOR, MAKE<br>SURE THAT THE<br>CABIN DIFFERENTIAL<br>PRESSURE IS ZERO.<br><br>IF THE LEVER<br>UNLOCKS DURING<br>THE TEST, SET THE<br>LEVER TO THE<br>LOCKED POSITION<br>AGAIN. |  |
| **unnecessary (adj) — UNNAPPROVED** | NOT NECESSARY | REMOVE THE<br>GROUND EQUIPMENT<br>THAT IS NOT<br>NECESSARY. | Remove the<br>unnecessary ground<br>equipment. |
| **unobstructed (adj) — UNNAPPROVED** | CLOGGED (adj)<br><br>CLEAR (adj) | MAKE SURE THAT THE<br>DRAIN OPENINGS ARE<br>NOT CLOGGED.<br><br>AN ATTENDANT MUST<br>HAVE A CLEAR VIEW<br>OF THE PERSON IN<br>THE TANK. | <br>Make sure that the drain<br>openings are<br>unobstructed.<br><br>An attendant must have<br>an unobstructed view of<br>the person in the tank. |
| **unpack (v) — UNNAPPROVED** | REMOVE (v) | REMOVE THE PARTS<br>FROM THE SHIPPING<br>CONTAINER. | Unpack the shipping<br>container. |
| **unpainted (adj) — UNNAPPROVED** | BARE (adj) | APPLY PROTECTIVE<br>TREATMENT ON THE<br>BARE SURFACES. | Protect the unpainted<br>surfaces. |

# Page 408 of 434

| **Word**<br>**(part of speech)** | **Approved meaning/**<br>**ALTERNATIVES** | **STE EXAMPLE** | **Non-STE example** |
|---|---|---|---|
| **unplug (v) — UNNAPPROVED** | DISCONNECT (v)<br><br>PLUG (TN) | DISCONNECT THE<br>SOLDERING IRON.<br><br>REMOVE THE PLUG<br>FROM THE FUEL LINE. | Unplug the soldering<br>iron.<br><br>Unplug the fuel line. |
| **unprotected (adj) — UNNAPPROVED** | PROTECTION (n) | WHEN YOU REMOVE<br>THE COVER, THE<br>CONTACTS HAVE NO<br>PROTECTION. | When you remove the<br>cover, the contacts are<br>unprotected. |
| **unreel (v) — UNNAPPROVED** | UNWIND (v) | UNWIND THE HOSE. | Unreel the hose. |
| **unrestricted (adj) — UNNAPPROVED** | FREE (adj) | THE BALL BEARING<br>MUST BE FREE TO<br>TURN. | Ball bearing rotation<br>must be unrestricted. |
| **unsafe (adj) — UNNAPPROVED** | DANGEROUS (adj) | IN THESE<br>CONDITIONS, IT IS<br>DANGEROUS TO<br>REMOVE THE<br>CARTRIDGES FROM<br>THE FIRE<br>EXTINGUISHER<br>BOTTLE. | In these conditions, it is<br>unsafe to remove the<br>cartridges from the fire<br>extinguisher bottle. |
| **UNSATISFAC-**<br>**TORILY (adv)** | In an unsatisfactory<br>manner | IF THE ELEVATORS<br>OPERATE<br>UNSATISFACTORILY,<br>MOVE THE CONTROL<br>COLUMN. |  |
| **UNSATISFAC-**<br>**TORY (adj)** | Not satisfactory | IF THE CONDITION OF<br>THE FILTERS IS<br>UNSATISFACTORY,<br>REPLACE THEM. |  |
| **unscrew (v) — UNNAPPROVED** | LOOSEN (v)<br><br>TURN (v)<br><br>REMOVE (v) | LOOSEN THE CAPTIVE<br>BOLTS.<br><br>TURN THE END<br>FITTING TO ALIGN THE<br>RIGGING HOLES.<br><br>REMOVE THE NUTS. | Unscrew the captive<br>bolts.<br><br><br>Unscrew the end fitting<br>to align the rigging holes.<br><br>Unscrew the nuts. |
| **UNSERVICEABLE**<br>**(adj)** | Not fit for its purpose | REPLACE THE<br>UNSERVICEABLE<br>BUSHINGS. |  |
| **unstable (adj) — UNNAPPROVED** | NOT STABLE | IF THE SURFACE IS<br>NOT STABLE, AN<br>ACCIDENT CAN<br>OCCUR. | If the surface is unstable,<br>an accident can occur. |
