<!-- section: APPENDIX | pages: 413-416 | verified: true -->

# Page 413 of 434

ASD-STE100 Simplified Technical English
Word Approved meaning/
(part of speech) ALTERNATIVES STE EXAMPLE Non-STE example

| Word (POS) | Meaning & Examples |
|------------|-------------------|
| **unable (adj) — UNNAPROVED** | CANNOT (v) IF YOU CANNOT TURN If you are unable to turn THE PULLEY, MAKE the pulley, make sure SURE THAT THE PIN IS that the pin is removed. REMOVED. |
| **unauthorized (adj) — UNNAPROVED** | NOT APPROVED IF YOU ARE NOT If you are unauthorized, APPROVED TO DO do not do this engine THIS WORK, DO NOT test. DO THIS ENGINE TEST. |
| **uncap (v) — UNNAPROVED** | REMOVE (v) REMOVE THE CAPS Uncap the hoses. (A CAP [TN] OR CAPS FROM THE HOSES. [TN]) |
| **unclip (v) — UNNAPROVED** | REMOVE (v) REMOVE THE VISOR Unclip the visor. (FROM A CLIP [TN] OR FROM THE CLIP. CLIPS [TN]) |
| **uncoil (v) — UNNAPROVED** | UNWIND (v) UNWIND THE CABLES Uncoil the cables CAREFULLY. carefully. uncontaminated CLEAN (adj) MAKE SURE THAT THE Make sure that the (adj) HYDRAULIC FLUID IS hydraulic fluid is CLEAN. uncontaminated. |
| **CONTAMINATION (n)** | MAKE SURE THAT Make sure that the fuel THERE IS NO tanks are CONTAMINATION IN uncontaminated. THE FUEL TANKS. |
| **uncouple (v) — UNNAPROVED** | DISCONNECT (v) DISCONNECT THE Uncouple the tow bar TOW BAR FROM THE from the vehicle. VEHICLE. |
| **uncovered (adj) — UNNAPROVED** | COVER (TN) DO NOT PUT A COVER Leave the container ON THE CONTAINER. uncovered. |
| **undamaged (adj) — UNNAPROVED** | NOT DAMAGED MAKE SURE THAT THE Make sure that the skin SKIN IS NOT is undamaged. DAMAGED. UNDEMANDED That occurs without an IF YOU GET AN (adj) apparent cause UNDEMANDED MOVEMENT, DO A TEST OF THE SYSTEM. |

# Page 414 of 434

ASD-STE100 Simplified Technical English
Word Approved meaning/
(part of speech) ALTERNATIVES STE EXAMPLE Non-STE example

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

# Page 415 of 434

ASD-STE100 Simplified Technical English
Word Approved meaning/
(part of speech) ALTERNATIVES STE EXAMPLE Non-STE example

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

# Page 416 of 434

ASD-STE100 Simplified Technical English
Word Approved meaning/
(part of speech) ALTERNATIVES STE EXAMPLE Non-STE example

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